JP6714026B2 - Vehicle emergency call device - Google Patents

Description

The present invention relates to a vehicle emergency notification device that automatically notifies a notification center when an emergency such as an accident occurs in a vehicle.

As a safety equipment of vehicles, an emergency call device that automatically notifies the information center when an emergency such as an accident occurs is being standardly installed. The vehicular emergency notification device transmits information obtained from an acceleration sensor, a vehicle speed sensor, an airbag device, and the like to an information center through a mobile communication network together with the position information generated by GPS when an emergency occurs.

When making an emergency call, additional information is sent that allows more detailed understanding of the emergency situation. For example, Patent Document 1 describes that additional information regarding whether or not a door can be opened/closed is transmitted.

JP-A-6-270754

Various sensors are required to obtain information on an emergency situation such as the opening/closing state of a door, and a large number of sensors must be installed in order to collect a large amount of information with high accuracy. In addition, when an abnormality occurs in the sensor due to an accident, it becomes impossible to collect information. Therefore, it is necessary to make the information redundant.

In view of the above, it is an object of the present invention to provide an emergency notification device for a vehicle, which uses an existing sensor to collect information regarding an emergency situation.

The vehicle emergency notification device of the present invention includes a detection unit that detects the occurrence of an emergency situation in a vehicle, a notification device that communicates with a notification center, and a notification device that notifies the notification center of information regarding an emergency that has occurred. And a control unit for operating the detection unit, the detection unit includes an air conditioning detector for detecting the environment inside and outside the vehicle for air conditioning, and the control unit is based on the output of the air conditioning detector when an emergency occurs. Checks for changes in room temperature inside the vehicle, and when there is a change in room temperature, informs the user of information regarding the situation inside the vehicle.

The room temperature in the vehicle compartment is detected by the air conditioning detector. When a window is damaged or a door is opened due to a collision of a vehicle, a collision of flying stones, or the like, outside air enters the vehicle compartment, and the room temperature changes in a short time. Therefore, by detecting the change in the room temperature, it is possible to recognize the change in the situation in the vehicle interior as described above. When an emergency occurs and the user is notified, the information regarding the condition inside the vehicle obtained by detecting the change in the room temperature is added.

According to the present invention, by using the existing detector to obtain information on the situation in the vehicle interior, it is possible to inexpensively obtain information on an emergency even without providing a new detector.

1 is a block diagram showing a schematic configuration of a vehicle emergency notification device according to an embodiment of the present invention. Flowchart showing the operation of the vehicle emergency call device when an accident occurs Flowchart showing the operation of the vehicle emergency call device when an emergency occurs Flowchart showing the operation of the vehicle emergency notification device at normal times

FIG. 1 shows a vehicle emergency notification device according to an embodiment of the present invention. The vehicular emergency notification device includes a detection unit 1 that detects the occurrence of an emergency of the vehicle, a notification device 3 that communicates with the notification center 2, a notification device 4 that notifies various types of information, and information regarding the emergency that has occurred. And a control device 5 for operating the notification device 3 so as to notify the notification center 2.

The detection unit 1 includes an airbag sensor 10, an acceleration sensor 11, a vehicle speed sensor 12, a seat belt wearing sensor 13, a seating sensor 14, a door opening/closing sensor 15, a position detector 16, and the like. These sensors and detectors are known to detect the occurrence of emergency situations such as vehicle accidents and breakdowns.

Here, the vehicle is equipped with an automatic air conditioner in order to maintain a comfortable environment inside the vehicle. The automatic air conditioner has a room temperature sensor 20, an outside air temperature sensor 21, a solar radiation sensor 22, and an air conditioning detector 23 for detecting the environment inside and outside the vehicle. From the output of the air conditioning detector 23, it is possible to detect a change in the temperature inside the vehicle compartment. When an emergency occurs, if there is a temperature change in the vehicle compartment, this change can be detected by the air conditioning detector 23. Therefore, the air conditioning detector 23 is used as a detector of the detection unit 1.

The notification device 3 has a communication device that performs mobile communication, and bidirectionally communicates with an external communication device using a mobile communication network. When an emergency occurs, the reporting device 3 operates to automatically communicate with the reporting center 2. The notification center 2 is installed in a police, fire department, hospital, highway company, a car manufacturer's call center, or the like. The notification device 4 is a display, a speaker, a buzzer, etc., and issues a warning by a display, a sound or the like when an emergency occurs.

The control device 5 composed of a microcomputer controls the change of the room temperature in the vehicle compartment based on the output of the emergency determination unit 25 that determines the level of the emergency that has occurred based on the output of the detection unit 1 and the output of the air conditioning detector 23. A temperature change detecting unit 26 for detecting, an information collecting unit 27 for collecting information on an emergency situation based on the output of the detecting unit 1, and a processing unit 28 for controlling the operations of the reporting device 3 and the reporting device 4 according to the determination result. It has and.

The emergency determination unit 25 determines whether an accident or an emergency other than an accident is based on the outputs from the airbag sensor 10, the acceleration sensor 11, and the vehicle speed sensor 12. Emergency situations other than accidents include spinning the vehicle and overcoming bumps. The airbag sensor 10 outputs a detection signal when the airbag is deployed. When there is a strong impact during traveling and the airbag is deployed, the emergency determination unit 25 causes a serious accident (high-level accident) due to the outputs from the acceleration sensor 11, the vehicle speed sensor 12, and the airbag sensor 10. It is determined that When there is a shock during traveling but the airbag is not deployed, the emergency determination unit 25 determines that the accident is a low-level accident such as light contact or an emergency other than the accident. When there is a weak impact during traveling and the airbag deploys, the emergency determination unit 25 determines that the accident is of a medium level.

The temperature change detection unit 26 detects a change in room temperature based on the output of the room temperature sensor 20. Although the temperature inside the sealed vehicle compartment is constant, if the window is broken or the door is opened during traveling, outside air enters the vehicle compartment and the room temperature changes greatly. The temperature change detection unit 26 monitors the room temperature and checks the change in the room temperature per a predetermined fixed time. When the temperature change detection unit 26 detects that the change in the room temperature per constant time is equal to or greater than the threshold value, the temperature change detection unit 26 determines that the situation inside the vehicle has changed. The threshold value may be corrected based on the outside air temperature, information about the on/off state of the air conditioner, and the open/close state of the door window. Further, when the window is open, or when there is no difference between the outside air temperature and the room temperature, the temperature change detection unit 26 may not make a determination, or the output of the temperature change detection unit 26 may be invalidated. Good.

The information collecting unit 27 receives the information about the emergency situation such as the position of the vehicle, the number of passengers, whether or not the seat belt is worn, the situation of the collision, the vehicle speed, etc., which are output from the sensors and detectors of the detection unit 1, and the information is stored in the memory. Memorize The information collecting unit 27 also receives the information regarding the condition inside the vehicle from the temperature change detecting unit 26 and stores it in the memory.

The processing unit 28 operates the reporting device 3 to report to the reporting center 2 when a high-level accident and a medium-level accident occur, and notifies the occupant of the low-level accident when the low-level accident occurs. To operate. Then, when a high-level accident and a medium-level accident occur, the processing unit 28 causes the notification device 3 to transmit the information about the accident including the information about the situation inside the vehicle collected by the information collecting unit 27 to the notification center 2. Make it work. In addition, when a low-level accident occurs or when a change in room temperature is detected, the processing unit 28 operates the notification device 4 to notify information regarding an emergency including information regarding a situation inside the vehicle.

Next, the operation of the vehicle emergency notification device when an emergency occurs will be described. In the event of an airbag deployment accident as an emergency, as shown in FIG. 2, the emergency determination unit 25 causes a serious accident based on the outputs of the acceleration sensor 11, the vehicle speed sensor 12, the airbag sensor 10, and the like. I judge that I did. The information collecting unit 27 collects information about the accident based on the output of the detecting unit 1. At this time, the temperature change detection unit 26 checks the change in room temperature from the output of the room temperature sensor 20. When the change in the room temperature per fixed time is equal to or more than the threshold value, the temperature change detecting unit 26 outputs the information indicating the change in the room temperature to the processing unit 28, the information collecting unit 27, and the emergency situation determining unit 25.

The processing unit 28 recognizes that a serious accident has occurred based on the output from the emergency situation judging unit 25, acquires information on the accident from the information collecting unit 27, and further damages the window based on the information indicating that the room temperature has changed. Or add information about the situation inside the vehicle such as opening the door. Then, the processing unit 28 operates the reporting device 3 to report the accident. The reporting device 3 reports the accident to the reporting center 1 and transmits information about the accident including the additional information described above.

When the change in room temperature is less than the threshold value, the temperature change detection unit 26 outputs information indicating that the room temperature has not changed. Based on the information indicating that the room temperature has not changed, the processing unit 28 determines that the window is not damaged and the door remains closed, and does not add the information regarding the condition inside the vehicle. The processing unit 28 operates the reporting device 3 so as to report the accident. The reporting device 3 reports the accident to the reporting center 2 and transmits information about the accident.

When an impact is applied to the vehicle as an emergency, the emergency determination unit 25 determines that an emergency has occurred based on the outputs of the acceleration sensor 11, the vehicle speed sensor 12, etc., as shown in FIG. The information collecting unit 27 collects information regarding an emergency based on the output of the detecting unit 1. Then, the emergency situation determination unit 25 checks whether or not the airbag is deployed based on the output of the airbag sensor 10.

When the airbag is deployed, the emergency determination unit 25 determines that it is an accident. Further, the temperature change detection unit 26 checks the change in room temperature from the output of the room temperature sensor 20. When the change in the room temperature per fixed time is equal to or more than the threshold value, the temperature change detection unit 26 outputs the information indicating that the room temperature has changed.

The processing unit 28 recognizes that an accident has occurred based on the output from the emergency determination unit 25, acquires information about the accident from the information collection unit 27, and further, based on the information indicating that the room temperature has changed, the window is damaged or the door is damaged. Add information about the situation inside the vehicle such as the opening of the car. Then, the processing unit 28 operates the reporting device 3 to report the accident. The reporting device 3 reports the accident to the reporting center 2 and transmits information about the accident including the above-mentioned additional information.

When the change in the room temperature is less than the threshold value, the temperature change detecting unit 26 outputs information indicating that the room temperature has not changed to the information collecting unit 27. Based on the information indicating that the room temperature has not changed, the processing unit 28 determines that the window is not damaged and the door remains closed, and does not add the information regarding the condition inside the vehicle. The processing unit 28 operates the reporting device 3 so as to report the accident. The reporting device 3 reports the accident to the reporting center 2 and transmits information about the accident.

When the airbag is not deployed, the emergency determination unit 25 determines that the emergency is an emergency other than an accident, and estimates the specific content of the emergency based on the output of the detection unit 1. Further, the temperature change detection unit 26 checks the change in room temperature from the output of the room temperature sensor 20. When the change in the room temperature per fixed time is equal to or more than the threshold value, the temperature change detection unit 26 outputs the information indicating that the room temperature has changed.

The processing unit 28 recognizes that an emergency situation other than the accident has occurred based on the output from the emergency situation determination unit 25, acquires information regarding the emergency situation from the information collection unit 27, and further based on the information indicating that the room temperature has changed. Add information about vehicle interior conditions such as broken windows or open doors. Then, the processing unit 28 operates the notification device 4 to warn the occurrence of an emergency. The notification device 4 issues an emergency warning and notifies information about the emergency including the additional information.

When the change in room temperature is less than the threshold value, the temperature change detection unit 26 outputs information indicating that the room temperature has not changed. Based on the information indicating that the room temperature has not changed, the processing unit 28 determines that the window is not damaged and the door remains closed, and does not add the information regarding the condition inside the vehicle. The processing unit 28 operates the notification device 4 to notify the emergency. The notification device 4 issues an emergency warning.

By the way, the detection unit 1 is operating when the start switch or the ignition switch of the vehicle is turned on. For example, the temperature change detection unit 26 monitors whether or not there is a room temperature change based on the output of the room temperature sensor 20. As shown in FIG. 4, when the vehicle speed is equal to or more than a predetermined value set in advance while the vehicle is traveling, and it is detected that the change in the room temperature is equal to or more than the threshold value, the emergency situation determination unit 25 determines that the emergency situation occurs. Judge that it has occurred. Then, it is checked whether or not the power window switch has been operated.

When the power window switch is not operated, the emergency determination section 25 determines that an emergency has occurred due to a change in the vehicle interior. The processing unit 28 operates the notification device 4 so as to notify that the emergency situation has occurred. The notification device 4 issues an emergency warning and notifies the window of damage due to a flying stone or the like.

When the power window switch is operated, the emergency determination unit 25 determines that the room temperature has changed due to the opening of the window of the door. Since the emergency has not occurred, the processing unit 28 does not operate the notification device.

The present invention is not limited to the above embodiment, and it goes without saying that many modifications and changes can be made to the above embodiment within the scope of the present invention. The opening of the door can be detected by the door opening/closing sensor 15. However, as a fail-safe, the opening of the door at the time of an accident may be determined together with the output of the room temperature sensor 20.

DESCRIPTION OF SYMBOLS 1 Detection part 2 Notification center 3 Notification device 4 Notification device 5 Control device 10 Airbag sensor 11 Acceleration sensor 12 Vehicle speed sensor 20 Room temperature sensor 23 Air conditioning detector 25 Emergency situation determination part 26 Temperature change detection part 27 Information collection part 28 Processing part

Claims (1)

For a vehicle including a detection unit that detects the occurrence of an emergency of a vehicle, a reporting device that communicates with a reporting center, and a control device that operates the reporting device to report information about the emergency that has occurred to the reporting center In the emergency notification device, the detection unit includes an air conditioning detector for detecting the environment inside and outside the vehicle for air conditioning and a power window switch , and the control device controls the operation of the air conditioning detector when an emergency occurs. Based on the output, check the room temperature change in the passenger compartment, when there is a change in the room temperature, check whether the power window switch has been operated, and if the power window switch is not operated, information on the vehicle interior status An emergency notification device for a vehicle, which is characterized by making a notification.

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