JPH04223214A - Own vehicle location reporting method - Google Patents

Abstract

PURPOSE:To enable an accurate location of own vehicle to be reported to a remote location accurately without being affected by a structure or a land shape by utilizing an artificial satellite. CONSTITUTION:A vehicle 101 is provided with a GPS(global positioning system) receiver 102 which receives electric wave from artificial satellites 201-204. The artificial satellites 201-204 move at a predetermined position so that an own vehicle location data can be obtained within a specified region by GPS if the vehicle 101 is located at the vertex with three or four artificial satellites 201-204 at bottom sides. An earth magnetism sensor 301 for detecting earth magnetism is further mounted to the vehicle and orientation measurement according to earth magnetism is performed at a location where it is difficult to receive electric wave of an artificial satellite such as within a tunnel, thus obtaining a location of the own vehicle. Then, data which is obtained as a result of three- dimensional measurement and orientation measurement according to earth magnetism is coded by an own vehicle location data conversion device 501 and is transmitted through an antenna 701 by a transmitter 601.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention enables the location of one's own vehicle to be detected within a predetermined regional area when there is no other means of communication due to a traffic accident or when an injured person needs help. The present invention relates to a vehicle position reporting method that can be used not only for vehicles but also for ships, aircraft, etc.

0002

[Prior Art] Conventionally, radio waves emitted from a vehicle are caught by an antenna and receiver in a distant area, and the source of the radio waves is determined based on the direction of the antenna and the time difference between the distant receiving points. The intensity of the radio waves was investigated in each region, and the source was determined by comparing the intensity with the intensity (for example, Japanese Patent Application Laid-Open Nos. 2-191100, 2-138888, and 1982). 65698
Publications, etc.).

However, in the case of the above method, since the source is determined from a distant location, there are many estimation errors due to the influence of various structures and structures existing in between, or the topography. There was a problem with lack of reliability.

0004

[Problems to be Solved by the Invention] An object of the present invention is to make it possible to notify a remote location of the exact location of one's own vehicle.

[0005]

[Means for Solving the Problems] The present invention provides a device that receives radio wave signals from a plurality of artificial satellites and obtains vehicle position data through triangulation three-dimensional measurement, and a device that measures direction using geomagnetism using a geomagnetic sensor. The above-mentioned problem has been solved by a vehicle position reporting method characterized in that the vehicle position is reported by transmitting data from a device that obtains vehicle position data.

[0006]

[Operation] By transmitting the own vehicle position data obtained by the receiver and the own vehicle position data obtained by the geomagnetic sensor after being encoded by the own vehicle position data conversion device, the own vehicle position is actively reported. be able to.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic configuration diagram of the present invention. In the figure, 101 is a vehicle (self-vehicle), and 201 to 204 are artificial satellites. Vehicle 101 is equipped with GPS receiver 102 that receives radio waves from artificial satellites 201 to 204. Since the artificial satellites 201 to 204 move at predetermined positions, if three or four of the artificial satellites 201 to 204 are the base and the vehicle 101 is the apex, trigonometry, three-dimensional measurement (
It is easy to obtain vehicle position data within a predetermined area using GPS).

The vehicle 101 is further equipped with a geomagnetic sensor 301 that detects geomagnetism. The geomagnetic sensor 301 is used to obtain vehicle position data by measuring the orientation using geomagnetism in places where it is difficult to receive radio waves from artificial satellites, such as in tunnels.

The data obtained as a result of the above-mentioned three-dimensional measurement and azimuth measurement using the earth's magnetic field is transferred to the own vehicle position data conversion device 50.
1 and transmitted by transmitter 601 via antenna 701.

[0010] In order to expand the reach of radio waves from transmitter 601, it is preferable to provide relay stations 401 to 403 as appropriate. In that case, it would be possible to use it more widely. If existing relay stations such as MCAs and repeaters are used as the relay stations 401 to 403, costs can be kept relatively low. Data sent to the relay stations 401 to 403, etc. is transferred to the central control room 801 and analyzed.

FIG. 2 is a block diagram of an embodiment of the invention. The present invention will now be described in further detail. As mentioned above, the GPS receiver 102 and the geomagnetic sensor 301 mounted on the vehicle 101 are connected to a plurality of satellites 201 to 2.
It detects the azimuth angle of radio waves emitted from 04 and the geomagnetism. GPS receiver 102 and geomagnetic sensor 3
The output of 01 is supplied to the own vehicle position data conversion device 501 in order to specify the own vehicle position.

The vehicle position data conversion device 501 includes a map number decoder 50 and a code modulator 51.
Accordingly, the GPS receiver 102 and the geomagnetic sensor 301
Determine the map number from the output of and encode this number. Further, the position number decoder 52 is
A position number corresponding to position information is generated from the outputs of the GPS receiver 102 and the geomagnetic sensor 301, and the output is supplied to the code modulator 53 and encoded.

[0013] The encoded map number and position number are
After being supplied to the mixer 54 and superimposed or mixed, the signals are supplied to the code oscillator 55. Code oscillator 55 generates a new code from the superimposed or mixed signals and sends an output code to switching circuit 56. The output of the switching circuit 56 is transmitted to the transmitter 601
low wave amplifier 60. The low frequency amplified output is supplied to a limiter and LP filter circuit 61. The output of the limiter and LP filter circuit 61 is supplied to the VCO 62 .

[0014] The VCO 62 constitutes a part of a PLL (phase lock loop) controlled by the CPU 67,
PL with buffer amplifier 63, voltage amplifier 64, oscillator 65 and active filter 66
It constitutes an L circuit. The output of the buffer amplifier 63 is voltage amplified by a voltage amplifier 68 and supplied to a buffer amplifier 69. vaffer amp 6
The output of 9 is power amplified by a power amplifier 70 and supplied to an antenna 701 .

In addition to the function of continuously transmitting the position of the own vehicle, the transmitter 601 can also be provided with an external timer 901 and periodically transmit the position output by interrupting the timer. Furthermore, the receiver unit 1001 can be provided externally, and when the receiver unit 1001 receives an external signal, the own vehicle position can be transmitted under the control of the control unit 1101.

Although the above embodiment relates to a car, it goes without saying that it can also be used for ships, aircraft, etc.

[0017]

Effects of the Invention As described above, the present invention uses a GPS receiver as its main component to re-encode and transmit vehicle position data obtained with the aid of a geomagnetic sensor. This system breaks away from conventional methods and actively advertises the vehicle's location. Moreover, since it uses artificial satellites, it is not affected by structures or topography, so it is highly reliable and extremely useful. , and is very useful with a wide range of applications.

[0018] In the method according to the present invention, even if your vehicle is involved in a traffic accident and there is no way to contact you, or if you are injured and cannot move, etc., by setting a predetermined code signal in advance. You can ask for help.

Furthermore, if a timer 901 is incorporated into the transmitter 60, it is possible to automatically report the current position of a taxi, transport vehicle, etc. at regular intervals. Furthermore, by setting a continuous timer until the scheduled arrival time at the time of departure, it becomes possible to report travel time and vehicle position in real time as a track chart.

Furthermore, in the present invention, by combining the transmitter 601 with the receiver 1001 and the controller 1101, it becomes possible to use it as a vehicle position confirmation device by remote control, and it is also equipped with a voice and image transmitter. This allows complete monitoring.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of the present invention.

FIG. 2 is a block diagram of essential parts of the present invention.

[Explanation of symbols]

101 Vehicle 102 GPS receiver 201 Artificial satellite 202 Artificial satellite 203 Artificial satellite 204 Artificial satellite 301 Geomagnetic sensor 401 Relay station 402 Relay station 403 Relay station 501 Own vehicle position data conversion device 601 Transmitter 701 Antenna 801 Central control room 901 Timer 1001 Receiver 1101 Control machine

Claims (1)

[Claims] Claim 1: A device that receives radio wave signals from a plurality of artificial satellites and obtains vehicle position data through three-dimensional triangulation measurement, and a device that obtains vehicle position data by measuring orientation using geomagnetism using a geomagnetic sensor. A vehicle position reporting method characterized by reporting the vehicle location by transmitting data.