JP2993181B2 - In-vehicle position calculation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle position calculating device capable of automatically detecting that an own vehicle has caused an accident and reporting the current position of the vehicle.

[0002]

2. Description of the Related Art In recent years, an in-vehicle position calculating device compares a traveling locus obtained from an azimuth sensor and a distance sensor with road data and estimates a position where a vehicle may exist by a method called map matching. It has become possible to notify a driver or a passenger of a more accurate vehicle position.

[0003]

However, in the current on-vehicle position calculating device, since the vehicle position information is used only by the driver or the passenger, despite the fact that the vehicle position information is obtained, However, there has been a problem that an emergency cannot be reported without using artificial means such as telephone or radio in an emergency such as a vehicle accident.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide an excellent in-vehicle position calculating device capable of detecting a vehicle accident and automatically reporting the accident. .

[0005]

The present invention SUMMARY OF THE INVENTION In order to achieve the above object, a position estimation means for estimating a current position of the vehicle, an impact sensor for detecting an impact vehicle has received, on
A serial impact detecting impact judging means for judging a degree of impact from the information of the sensor, the impact exceeds a predetermined value by the impact determination section
Transmitting means for transmitting wirelessly the current vehicle position information from at least the position estimating means when it is determined with respect to the base station and beyond the transmission of the vehicle position information from said transmitting means
After that, it is determined whether or not the vehicle is in a running state.
For example, a return determination means for stopping the position transmission is provided.

The present invention further comprises a return determination means for determining whether or not the vehicle after the accident is traveling after transmitting the vehicle position, and canceling the position transmission when the vehicle is traveling.

[0007]

Therefore, according to the present invention, along with automatically detecting its own vehicle accident such as a collision, as well as report the vehicle position location in <br/> police station or base station, such as a fire station, passing
After the notification, the vehicle runs
Stopping the position transmission in the feasible state has an effect that the base station can quickly and appropriately deal with the accident.

[0008]

FIG. 1 shows the configuration of an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a direction sensor, which detects the direction of a vehicle. Reference numeral 2 denotes a distance sensor which detects a traveling distance of the vehicle. Reference numeral 3 denotes a map data storage unit which stores digitized map data. Numeral 4 denotes position estimating means for comparing the travel locus obtained from the direction sensor 1 and the distance sensor 2 with the road data around the vehicle position stored in the map data storage means 3 to estimate the current vehicle position. 5
Is an impact detection sensor for detecting an impact applied to the vehicle. Numeral 6 denotes an impact judging means, which judges that the vehicle has caused an accident when the degree of impact detected by the impact detection sensor 5 exceeds a predetermined value. Numeral 7 is a vehicle position transmitting means. When the impact determining means 6 determines that the vehicle has caused an accident, the current position of the vehicle is fetched from the position estimating means 4 and
The position information is wirelessly transmitted to the base station. Numeral 8 denotes a time measuring means, which triggers the recovery judging means 9 to start processing after a lapse of a predetermined time from when the impact judging means 6 judges that the vehicle has caused an accident. Reference numeral 9 denotes return determination means, which determines whether or not a travel distance or a change in traveling azimuth from a time when a processing start trigger is received from the time measurement means 8 exceeds a predetermined value. The transmission of the transmission stop signal is sent to the vehicle position transmission means 7. Reference numeral 10 denotes an external transmission stopping means for stopping the position transmission of the vehicle position transmitting means 7 by a manual operation such as a key input of the apparatus.

Next, the operation of the above embodiment will be described with reference to FIGS. As shown in FIG. 3, when the vehicle 31 collides with an obstacle 32 such as a utility pole, first, it is determined whether or not the degree of impact of the vehicle obtained from the impact detection sensor 5 exceeds a predetermined value. Is determined (step 11). If the predetermined value is exceeded, it is determined that the vehicle has caused an accident, and a request for transmitting the vehicle position is issued to the vehicle position transmitting means 7. The vehicle position transmitting means 7 having received this request acquires the current vehicle position from the position estimating means 4 and starts transmitting the position information (step 12). As a communication method,
This device is connected to a transmitting / receiving device of a car telephone, an identification code is attached to a transmission signal from the vehicle position transmission means 7, and the signal with this identification code is received by a police station or a fire department as the base station 33. What should I do? Alternatively, you can use a dedicated line with a police or fire department,
A nearby base station in a car or portable radio may notify a police station or a fire station.

Next, after the impact judging means 6 makes an accident judgment, the following processing is performed so as to stop the transmission of the vehicle position if a malfunction or the vehicle is operating. In other words, immediately after the accident, the vehicle behaves largely, and the time measuring means 8 waits for a predetermined time until the vehicle enters a stable state (step 13). If the predetermined time has elapsed, the return determination means 9 calculates the rotation angle and travel distance of the vehicle traveling direction from that moment (step 14). If the rotation angle or travel distance of the vehicle direction exceeds a predetermined value, Is (Step 1
5, 16), it is determined that the vehicle is in a running state, and the position transmission is stopped by the vehicle position transmitting means 7 (step 17). Thereafter, the procedure returns to the determination of the impact of the vehicle (step 11), and the same processing is repeated.

The transmission of the vehicle position by the vehicle position transmitting means 7 may be forcibly stopped by manual operation by the external transmission stopping means 10.

As described above, according to the above embodiment, when the vehicle 31 collides with an obstacle 32 such as a utility pole, the impact detection sensor 5 detects the impact of the vehicle, and the impact determination means 6
When it is determined that this is an accident, the vehicle position transmitting means 7 transmits the position information of the vehicle to the base station 33 such as a police station, so that the police station or the like can be quickly notified of the occurrence of the accident and its position. .

In this embodiment, the transmission information is limited to the position information of the vehicle. However, if the identification number of the vehicle is registered in advance and the vehicle identification number is transmitted together with the vehicle position information, it is more effective. This has the effect of making it easier to handle accidents.

[0014]

As is apparent from the above embodiment, the present invention has a function of detecting a vehicle impact and a function of transmitting vehicle position information and preferably a vehicle identification number to a conventional vehicle position calculating device. It is obtained by adding, upon detection of a great impact that accident vehicle automatically transmits the vehicle position and the vehicle identification number to a base station, such as a police station, or
Also, after the notification, it is determined whether or not the vehicle can run.
Stop sending position if it is possible to run
By the occurrence of the accident to the police station and the like, and the generated current place
It has the effect that it is possible to report promptly and appropriately.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram of an in-vehicle position calculating device according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an algorithm according to an embodiment of the present invention;

FIG. 3 is a schematic diagram showing an image of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Direction sensor 2 Distance sensor 3 Map data storage means 4 Position estimation means 5 Impact detection sensor 6 Impact determination means 7 Vehicle position transmission means 8 Time measurement means 9 Return determination means 10 External transmission stop means 31 Own vehicle 32 Electric pole and other obstacles Object 33 Base Station

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G01C 21/00 G08G 1/00 G08G 1/13

Claims (6)

(57) [Claims] 1. A position estimating means for estimating a current position of a vehicle, an impact detecting sensor for detecting an impact received by the vehicle, and
A serial impact detecting impact judging means for judging a degree of impact from the information of the sensor, the impact exceeds a predetermined value by the impact determination section
Transmitting means for transmitting wirelessly the current vehicle position information from at least the position estimating means when it is determined with respect to the base station and beyond the transmission of the vehicle position information from said transmitting means
After that, it is determined whether or not the vehicle is in a running state.
For example, an in-vehicle position calculation device including a return determination unit that stops position transmission . 2. The method according to claim 2 , wherein the impact is determined by a predetermined value.
When it is determined that the current position has been exceeded.
Wirelessly transmits vehicle position information and vehicle identification code to the base station.
2. The in- vehicle position calculating device according to claim 1 , further comprising: a transmitting unit for transmitting the position. 3. A comprising a time measuring means for measuring time, the vehicle after an impact, is the return determination means after the lapse of a predetermined time period and performs a return judgment of the vehicle according
Item 4. An in-vehicle position calculating device according to item 1 . Wherein said recovery determination method of determining means, the vehicle is vehicle position calculating device determines according to claim 3, wherein the vehicle has returned when rotated a predetermined angle or more. Wherein said recovery determination method of determining means, the vehicle is vehicle position calculating device determines according to claim 3, wherein the vehicle has returned to when traveling more than a predetermined distance. Further comprising: a external transmission stopping means to stop the vehicle position transmission, vehicle position calculating apparatus according to any one of claims 1, 4, and 5 were to be interrupted vehicle position transmitted by the manually operated.