JP3015337B2 - Vehicle emergency call system and vehicle emergency call device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle emergency report system for automatically reporting the position of a vehicle from an accident vehicle to a center by radio, and a vehicle emergency report device for executing this report. It is intended to be conveyed accurately.

[0002]

2. Description of the Related Art In recent years, there has been a movement in Japan to standardize a vehicle emergency notification system in order to cope with frequent traffic accidents. In the event of a vehicle collision or accident, this system automatically reports vehicle emergency information to the center from an emergency notification device mounted on the vehicle, shortens the time it takes for the emergency vehicle to arrive at the accident site, Rescue more quickly,
This system has already been implemented in Germany.

The following functions are required for an emergency notification device mounted on a vehicle. (1) Communication function (communication with the center) It has a communication function similar to that of a mobile phone, and enables automatic switching between 9600 bps data communication and voice communication. (2) Position detection function (position detection of own vehicle) As vehicle position detection data, own vehicle position data such as GPS and gyro is recorded. (3) Emergency detection function (emergency detection of own vehicle) It has a collision sensor and a rollover sensor and detects what kind of accident has occurred. (4) Vehicle Emergency Information Notification Function (Emergency Notification to Center) An emergency notification is started by detecting a collision sensor or a rollover sensor, and the recorded vehicle position data is automatically transmitted. Manual notification by pressing the vehicle emergency information notification button is also enabled. (5) Power management function (controls the power supply of the emergency notification device) When an accident is detected, automatic switching to the auxiliary battery is performed to secure the power supply during the emergency notification.

When a vehicle equipped with the emergency notification device encounters an accident, the vehicle position data recorded in the emergency notification device is automatically transmitted to the center, and the center checks the position of the accident vehicle based on the data. And request that an emergency vehicle be dispatched.

[0005] Conventionally, a navigation device for displaying a traveling position of a vehicle has been provided with a navigation device similar to the emergency notification device.
It was proposed to have a location reporting function in the event of an accident,
For example, the apparatus is disclosed in Japanese Patent Application Laid-Open No. 5-5626.

However, in the vehicle emergency notification system, unlike a navigation device having a notification function, a database such as map data is stored and managed by the center, and is sent from an accident vehicle using this database. The location of the accident vehicle is specified on the center side based on the data.

In this case, the location of the accident at the center must be promptly and accurately performed to rescue the injured person as soon as possible. The data transmission time from the accident vehicle to the center is substantially on the order of 30 seconds excluding the time spent for network connection, and during this time, data enabling the location of the accident to be transmitted to the center.

[0008] A group including the inventors of the present invention has proposed a vehicle emergency notification system capable of responding to such a request. First, this system will be described.

In this system, as shown in FIG. 6, an emergency notification device 41 equipped with various sensors and communication means is mounted on a vehicle. And data is transmitted via the telephone line 88.

The emergency notification device 41 includes an angle sensor 47 such as a gyro for detecting the traveling direction of the vehicle, and a GPS antenna 65.
GPS to determine the position of the vehicle from the GPS data received at
A receiver 48, a rollover sensor 49 for detecting the rollover of the vehicle, a RAM 50 for recording data on the position of the vehicle while traveling, a flash ROM 51 for permanently storing data necessary for elucidating the cause of the accident, and an emergency Speed sensor connected to the notification device 41
54, a reverse 55, a crash sensor 56, a CPU 46 for detecting the occurrence of an accident based on information from the rollover sensor 49 and information from the rollover sensor 49 and controlling the operation of an automatic notification,
A modem 45 for modulating and demodulating data to be transmitted and received, and a control switching unit 44 for controlling switching to data transmission or voice communication,
A data / voice switching unit 43 for switching an input / output destination of data or voice to be transmitted / received, a mobile phone 42 performing a communication operation through an antenna 64, and power supply when an external battery 53 used in normal times cannot be used in an emergency or the like. Internal battery
52, and further, a speaker 62 and a microphone 63 that enable hands-free voice communication, an emergency button 60 that enables a manual emergency call, an LED 59 that displays an operation state of the emergency call device 41, and the like. Connected.

On the other hand, the center 81 includes a telephone 82 for performing a communication operation, a modem 83 for modulating and demodulating data to be transmitted and received,
It has map data 85 stored in a database, a CPU 84 for judging an accident position and controlling each unit, an operation unit 87 operated by an operator, and a display unit 86 for displaying the accident position on the map. ing.

In this system, the running vehicle sequentially records its own vehicle position data in the RAM 50 of the emergency notification device 41,
When an accident occurs, the host vehicle transmits its own vehicle position data indicating the recorded traveling history to the center 81. In Center 81,
Map matching is performed using the received data to specify the location of the accident.

FIG. 7 shows a functional block diagram of the emergency notification device 41 for recording and transmitting the vehicle position data. This device processes signals received from GPS satellites and
A GPS processing unit 11 for generating data (G), a vector generation unit 12 for calculating a motion vector (V) of the vehicle from gyro data indicating a bearing and a vehicle speed pulse indicating a vehicle speed,
A position calculating unit 19 for obtaining a current position (P) using the GPS data (G) output from the S processing unit 11 and the vector data (V) output from the vector generation unit 12,
A ring buffer 13 for storing data (G), vector data (V) and current position data (P); a transmission data reading unit 16 for reading data to be transmitted from the ring buffer 13 when an accident occurs; A transmission data area 20 used as a temporary data storage area, a transmission unit 17 for transmitting read data to the center via an antenna 18, an accident detection unit 15 for detecting occurrence of an accident, and a GP
The control unit 14 controls the operations of the S processing unit 11, the vector generation unit 12, the position calculation unit 19, and the transmission data reading unit 16.

In this vehicle, radio waves from GPS satellites are received during normal driving, and the GPS processing unit 11 of the emergency notification device is used.
Processes the received signal, and reproduces the time and orbital elements and other reproduction data sent from the GPS satellites or the latitude / longitude data calculated based on the data at regular time intervals in the ring buffer 13 and the position calculation means 19. Output to

The vector generation unit 12 of the emergency call device
During traveling, a vector representing the moving direction and speed of the vehicle is calculated at regular intervals from data indicating the direction input from the gyro device and the vehicle speed obtained from the vehicle speed pulse, and the ring buffer 13 and the position calculating means 19 are calculated. Output to

The position calculating means 19 obtains the current position by making necessary corrections using the GPS data input from the GPS processing unit 11 and the vector data input from the vector generation unit 12, and stores the current position data in the ring buffer 13. Output to

Data to be input is sequentially and cyclically written to the ring buffer 13, and when data writing completes one cycle, newly input data is overwritten on data recorded one cycle before. For this reason, the ring buffer 13 always stores only the data that goes back a certain period from the current time.

In FIG. 7, the data recorded in the ring buffer 13 is represented by Gm, Vm, ‥, G1, V1, G0, V0 and P
2m, P2m-1, ‥, and P0. G0, G
1, ‥, Gm (G0 is oldest and Gm is newest) is GP
The GPS data output from the S processing unit 11, V0,
V1, ‥, and Vm (V0 is the oldest and Vm is the newest) are vector data output from the vector generation unit 12,
P2m, P2m-1, ‥, and P0 (P0 is the oldest and P2m is the newest) are the current position data output from the position calculating means 19. Here, the vector data and the GPS data are output alternately from the GPS processing unit 11 and the vector generation unit 12, and the current position data is output from the position calculation unit 19 at each output time of the vector data and the GPS data. FIG. If the measurement time interval between vector data and GPS data is different, the number of V data and G data held in the ring buffer 13 will be different.

When an accident occurs in the vehicle, an accident detection unit 15 including a collision sensor and a rollover sensor detects the accident based on the impact applied to the vehicle, the inclination of the vehicle body, and the like, and transmits the detection to the control unit 14. In response to this, the control unit 14
The processing unit 11, the vector generation unit 12, and the position calculation unit 19 stop outputting data to the ring buffer 13, and instruct the transmission data reading unit 16 to read data from the ring buffer 13. .

The transmission data reading unit 16 includes a ring buffer 13
From the data held in the latest current position data (P2m), the oldest current position data (P0), and
All the GPS data and vector data are read out to the transmission data area 20, and these data are output to the transmission unit 17 in the following order.

First, the latest current position data, then
The GPS data and vector data are recorded in the order from the latest recording time, and finally the oldest current position data. That is, the order is P2m, Gm, Vm, ‥, G1, V1, G0, V0, P0. The transmitting unit 17 transmits this data to the center via the antenna 18 in that order.

By transmitting data in this order, even if the transmission is interrupted in the middle of data transmission, the center keeps the latest data of the own vehicle position (that is, the data of the accident position) and the nearby traveling data. The data indicating the history will arrive.

FIG. 8A schematically shows data transmitted from the emergency notification device to the center. From the emergency notification device to the center, the current position data P of the last point 24
2m, Gm, Vm, Gm-1, Vm-1, ‥, Gk, Vk ‥, G1,
Data is transmitted in the order of V1, G0, V0, and the current position data P0 of the point 22. During the transmission, even if the transmission stops immediately after transmitting Vk, as shown in FIG. 8B, at the center, the present position data P2m, G
The data of m, Vm, Gm-1, Vm-1, ‥, Gk and Vk can be obtained.

When the center receives the data representing the travel locus from the emergency notification device, the center performs map matching with the map data to determine the final point 24.

If the data transmission from the emergency notification device is performed without interruption, the center executes the map matching with the point 22 in FIG. 8A represented by the current position data P0 as the initial position. I do.

Several methods are known for map matching, but the point is that the correspondence between the map data and the measured vehicle position data is sequentially examined to determine the final position on the map data. This is the processing to be performed.

For example, as shown in FIG. 9, a road (thick line) which enters a circle having a constant radius from a point 22 represented by the position data P0 on the map database is obtained, and a motion vector V0 and a motion vector V0 are obtained. Select a road that extends in the same direction, specify the adjacent positions 33, 34, 35 from point 22 on the road, and distance (difference) from those points 33, 34, 35 to point 22
Weight according to.

Next, the difference between the position moved from each of the positions 33, 34, 35 by the motion vector V0 and the position on each road adjacent to the position (the second proximity position) is determined, and the weight corresponding to the difference is calculated. Is cumulatively added for each road. Next, a difference between a position moved by the motion vector V1 from the second proximity position on each road and a position on each road (third proximity position) adjacent thereto is calculated, and a weight corresponding to the difference is calculated. Is cumulatively added for each road. By repeating these operations, the position corresponding to the final point 24 is specified on the road having the highest cumulative value of the weights.

In the course of this operation, when the position on the road deviates from the error range of the positioning position calculated using the GPS data, the road is excluded from the target of the matching, thereby improving the efficiency of the processing. , Matching accuracy can be improved.

When the data transmission from the emergency notification device is stopped halfway, the center returns to the vector V from the last point 24 in FIG. 8B represented by the current position data P2m.
A point 23 is obtained by tracing m, Vm-1, ‥, and Vk in reverse, and the map matching is executed with the point 23 as a starting position, and a position on the road corresponding to the final point 24 is specified.

[0031]

In this vehicle emergency notification system, no matter what condition the vehicle encounters an accident,
It is necessary for the center to be able to quickly and accurately grasp the location and status of the accident.

Transmission of the vehicle position data from the accident vehicle is as follows.
Although it is indispensable to identify the location of the accident at the center, the situation of the accident cannot be grasped only by receiving this data. The situation, such as whether or not there is an injured person, can be more reliably transmitted by voice communication using the handset of the emergency notification device. On the other hand, it is difficult for a driver who has caused an accident in a strange land to quickly and accurately convey the location of the accident. An important issue for this system is how to speed up the transmission of the accident location and the accident situation between the accident vehicle and the center under the urgent situation.

[0033]

[0034]

The present invention addresses such a problem, and provides a vehicle emergency notification system capable of accurately transmitting the location and status of an accident to a center, and a vehicle emergency notification device for executing the notification. It is intended to be.

[0036]

Therefore, according to the present invention, when an accident occurs, data recorded in a vehicle is divided into a plurality of blocks, each block is divided and transmitted to a center, and transmission of each block is performed. In the meantime, the vehicle and the center can talk by voice.

Therefore, the center can efficiently grasp the accident location and the accident situation.

[0038]

[0039]

[0040]

[0041]

[0042]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention relates to a vehicle emergency system in which data for specifying a vehicle position is automatically transmitted from an accident vehicle to a center via a wireless line when an accident occurs. In the notification system, the vehicle, while traveling, cyclically records data on the vehicle position,
When an accident occurs, the recorded data is divided into a plurality of blocks, each block is transmitted to the center separately, and communication with the center is enabled during transmission of each block. Accident location and accident status can be efficiently grasped.

According to the second aspect of the present invention, the blocks are transmitted to the center in order from the block containing the data having the highest priority, so that the location of the accident at the center can be quickly grasped.

According to a third aspect of the present invention, there is provided a vehicle emergency notification device which is mounted on a vehicle and automatically transmits data for specifying a vehicle position to a center via a wireless line when an accident occurs. Data storage means for cyclically recording data relating to a position; data reading means for reading data recorded in the data storage means into a plurality of blocks when an accident occurs; communication means for making a voice call; And a control means for alternately performing transmission of the block read by the above and voice communication by the communication means, so that the center can be efficiently informed of the accident location and the accident situation.

According to a fourth aspect of the present invention, the data reading means reads data from the data storage means first from a block containing new data. Since the data can be received first, the rough location of the accident location can be grasped for the time being, and thereafter, the accident location can be specified with high accuracy each time the received data increases.

[0046]

[0047]

[0048]

[0049]

[0050]

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment) In the first embodiment,
A vehicle emergency notification system that efficiently performs data transmission of travel history data and voice communication will be described.

The hardware configuration of the vehicle emergency notification device and the center of this system is the same as in FIG. In addition, the vehicle emergency notification device has the configuration shown in FIG. 1 as a block for performing data transmission and telephone conversation. In this configuration, a handset 61 for performing voice communication and a control switching unit 44 for switching from data transmission to voice communication are added to the configuration of FIG.

In this vehicle emergency notification device, the GPS data (G), the vector data (V) and the current position data (P) are cyclically recorded in the ring buffer 13 during traveling, and the data to be transmitted to the center when an accident occurs. Is read into the transmission data area 20 by the transmission data reading unit 16. The operation so far is the same as that described with reference to FIG.

Next, the control unit 14 instructs the transmission data reading unit 16 to output the data of the first block among the data to be transmitted to the center. In response to this, the transmission data reading unit 16 displays the latest current position data indicated by “1” in FIG. 2 and the GPS data and vector data (P2m, Gm, Vm, Vm,
Ｇ, Gm-19, Vm-19) are output to the transmission unit 17. Transmission unit 17
Transmits this to the center using the antenna 18.

Next, the control unit 14 instructs the control switching unit 44 to switch to a voice call, and the control switching unit 44 enables a call using the handset 61.

After the predetermined time has elapsed, the control unit 14 instructs the control switching unit 44 to stop the voice call, and instructs the transmission data reading unit 16 to output the data of the second block. In response to this, the transmission data reading unit 16 receives "3" in FIG.
The GPS data and vector data (Gm-20, Vm-20,
‥, Gm-39, Vm-39) to the transmitting unit 17 and
Transmits this to the center using the antenna 18.

Next, the control unit 14 instructs the control switching unit 44 to switch to a voice call, and the control switching unit 44 enables a call using the handset 61.

As described above, in this vehicle emergency notification device,
The driving history data to be transmitted to the center is divided into a plurality of blocks, and data transmission and voice communication of those blocks are performed alternately. In addition, the traveling history data is divided into a plurality of pieces of data arranged in the transmission order to the center, and the data is transmitted in order from a block including data having a new recording time, that is, a block having a higher priority.

On the other hand, when the center receives the first block of the traveling history data, the center obtains the starting position by tracing the vectors Vm, ‥, and Vm-19 in reverse from the position represented by P2m, and performs map matching therefrom. To find the final position on the road with coarse accuracy.

Next, when it is time for a call, the operator asks about the accident situation by a call and checks whether there is any injured person.

Next, when the second block of the travel history data is received, the data is used together with the data of the first block to perform map matching, and the final position is obtained with higher accuracy.

At the time of the next call, the operator confirms the damage status of the vehicle by the call.

As described above, the center obtains the accident position by map matching each time the block of the traveling history data is received. Each time the number of receptions of this block increases and the number of available data increases, the accident location can be specified with higher accuracy. Also, during the call hours,
Check the status of accidents based on urgent matters such as the presence or absence of injuries.

At the center, when the approximate location of the accident is known and the occurrence of the injured person is known, the ambulance vehicle is directed toward the accident location. After that, when highly accurate accident location information is obtained, the traveling ambulance vehicle is notified of the final destination.

In this vehicle emergency notification system, it is possible to quickly and flexibly respond according to the accident situation by such a method.

(Second Embodiment) In the second embodiment,
Data transmission of travel history data when an accident occurs in a place where GPS data cannot be obtained, such as a tunnel, will be described.

In the vehicle emergency notification device of this system, as shown in FIG. 3A, the ring buffer 13 has a storage area capable of storing more data than the travel history data transmitted to the center. In FIG. 3A, an area where data transmitted to the center is normally stored is indicated by a dotted line. Only a predetermined number of data having a new recording time among the data recorded in the ring buffer 13 are transmitted to the center.

When an accident occurs, the transmission data reading unit 16 outputs the latest current position data (P2) from the area in which the data to be transmitted is stored, as shown in FIG.
n), the GPS data and vector data (Gn, Vn, ‥, Gk, Vk) included in the area, and the last current position data (P2k-1) of the area are read into the transmission data area 20; These data are expressed as P2n, Gn, Vn,.
k, Vk, and P2k-1 are output to the transmitting unit 17 in this order. The transmitting unit 17 transmits these data to the center in this order.

However, when the vehicle is traveling in a tunnel, the received radio waves from the GPS satellites do not reach, so that valid GPS data cannot be obtained. At this time, the GPS processing unit 11 of the emergency notification device outputs GPS data with a flag indicating invalidity at the time of outputting the GPS data, and this is recorded in the ring buffer 13. In FIG. 3, as shown in (c), invalid GPS data is indicated by “*”.
And is indicated.

If the GPS data is not included in the driving history data received by the center at the time of the accident, the candidate position on the road is compared with the absolute position in the process of map matching. Since the process of judging suitability cannot be performed, highly accurate map matching cannot be performed.

Therefore, in such a case, the transmission data reading section 16 sets the target area of the ring buffer 13 for reading data to be transmitted to the center as shown in FIG. Expand to the range included above.
Then, as shown in FIG. 3D, the latest current position data (P2n) in the enlarged area, the vector data (Vn, ‥, V2) included in the area, and the valid GPS data (G1) And the current position data (P3) at the end of the area are read out to the transmission data area 20, and the data is transmitted to the center in order of data having a new recording time.

FIG. 4 schematically shows this pattern. The vehicle before entering the tunnel records V0, V1, and V2 as vector data, and records valid G0, G1, and G2 as GPS data. After entering the tunnel, V3, ‥, Vk, ‥, Vn-
1, Vn is recorded, and G3 *,
‥, Gk *, ‥, Gn-1 *, Gn * are recorded, but all of these GPS data are invalid data.

Assume that an accident has occurred in the vehicle in this state.
If normal GPS data can be obtained, vector data from Vk to Vn and GPS data from Gk to Gn are transmitted to the center, but all GPS data from Gk to Gn are now invalid. Therefore, the range of the transmission data is expanded to include the valid GPS data,
The vector data from 1 to Vn and the valid GPS data of G1 and G2 are transmitted to the center.

When the amount of transmission data becomes too large because the range of the transmission data is expanded, continuous vector data having similar directions are combined into one vector to reduce the data amount. In this case, the transmission data amount is set within a predetermined range.

As described above, by always including one or more valid GPS data in the traveling history data transmitted to the center, the center can execute accurate map matching, and the accident location can be accurately determined. You can figure out.

(Third Embodiment) In the third embodiment,
Data transmission when the accident vehicle further moves from the accident position will be described.

FIG. 5 shows a case where a vehicle 91 having an accident at the shoulder of a mountain road 93 falls along the mountain slope after transmitting the first travel history data to the center. ing. The control unit of the emergency notification device of this vehicle 92
14 (Fig. 1) is an accident detection unit 15 consisting of a rollover sensor and the like.
When the movement of the vehicle body after the data transmission is identified based on the detection result of the above, it instructs the GPS processing unit 11 to generate GPS data.

The GPS processing section 11 receives this instruction and
It processes the received signal from the PS satellite and outputs the latitude / longitude data to the ring buffer 13.

Control unit 14 instructs transmission data reading unit 16 to read data from ring buffer 13, and transmission data reading unit 16 transmits traveling history data including newly added GPS data to ring buffer 13. From the transmitter 17
Output to The transmitting unit 17 transmits this data to the center.

Thus, the second data transmission is performed from the vehicle 92 that has moved from the first accident location. The center can analyze the data received by the second data transmission and detect the road 94 closest to the position of the accident vehicle 92.

[0082]

As is clear from the above description, in the system of the present invention, the traveling history data is divided into blocks and transmitted to the center, and the vehicle and the center talk by voice between transmissions of each block. Since the center can be operated, the center can efficiently grasp the accident location and the accident situation, and can take appropriate measures according to the accident situation quickly.

[0083]

[0084]

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a vehicle emergency notification device according to a first embodiment of the present invention;

FIG. 2 is a diagram illustrating an order of data transmission and a call performed by the vehicle emergency notification device according to the first embodiment;

FIG. 3 is a diagram for explaining data recorded and transmitted data in a vehicle emergency notification device according to a second embodiment of the present invention;

FIG. 4 is a view for explaining data transmission in the second embodiment;

FIG. 5 is a diagram showing a situation where data transmission is performed in a third embodiment of the present invention;

FIG. 6 is a block diagram showing a configuration of a vehicle emergency notification system.

FIG. 7 is a block diagram showing a configuration of a vehicle emergency notification device;

FIG. 8 is a diagram showing travel history data transmitted to a center;

FIG. 9 is a diagram illustrating map matching.

[Explanation of symbols]

 11 GPS processing unit 12 Vector generation unit 13 Ring buffer 14 Control unit 15 Accident detection unit 16 Transmission data readout unit 17 Transmission unit 18 Antenna 19 Position calculation means 22 Start point 23 Start point due to transmission interruption 24 Final point 33, 34, 35 on road Position 41 Emergency call device 42 Cell phone 43 Data / voice switching unit 44 Control switching unit 45 Modem 46 CPU 47 Angle sensor 48 GPS receiver 49 Rollover sensor 50 RAM 51 Flash ROM 52 Internal battery 53 External battery 54 Speed sensor 55 Reverse 56 Crash Sensor 57 Brake 59 LED 60 Emergency button 61 Handset 62 Speaker 63 Microphone 64 Antenna 81 Center 82 Telephone 83 Modem 84 CPU 85 Map data 86 Display section 88 Telephone line 89 Wireless line 91, 92 Accident vehicle 93, 94 Road

Continuation of the front page (72) Inventor Hiroshi Iwamatsu 4-1, Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture Inside Matsushita Communication Industrial Co., Ltd. (72) Inventor Tatsuyuki Negishi 4-chome, Tsunashima-Higashi, Kohoku-ku, Yokohama, Kanagawa Prefecture No. 1 Matsushita Communication Industrial Co., Ltd. (72) Inventor Yukio Ichikawa 4-1-1 Tsunashima Higashi, Kohoku-ku, Yokohama City, Kanagawa Prefecture Inside Matsushita Communication Industrial Co., Ltd. (56) References JP-A-8-287386 (JP, A) JP-A-6-288780 (JP, A) JP-A-4-28394 (JP, U)

Claims (4)

(57) [Claims] 1. A vehicle emergency notification system in which data for specifying a vehicle position is automatically transmitted from an accident vehicle to a center via a wireless line when an accident occurs. Data is recorded cyclically, and in the event of an accident, the recorded data is divided into a plurality of blocks, each block is transmitted to the center, and a call with the center can be made between transmissions of each block A vehicle emergency call system, characterized in that: 2. The vehicle emergency notification system according to claim 1, wherein the blocks are transmitted to a center in order from a block including data having a high priority. 3. A vehicle emergency notification device mounted on a vehicle and automatically transmitting data for specifying a vehicle position to a center via a wireless line in the event of an accident. Data storage means for recording, data reading means for reading data recorded in the data storage means in a plurality of blocks when an accident occurs, communication means for making a voice call, and data read by the data reading means A vehicle emergency notification device comprising: control means for alternately performing transmission of a block and voice communication by the communication means. 4. The vehicle emergency notification device according to claim 3, wherein said data reading means reads out from said data storage means, first said block including data whose recording time is newer.