JP3142265B2 - Emergency call system terminal equipment and emergency call system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted on a vehicle such as an automobile, and is used in an emergency such as a traffic accident or sudden illness.
The present invention relates to an emergency call system terminal device and an emergency call system for transmitting data such as current vehicle position information and registered vehicles to an emergency call center.

[0002]

2. Description of the Related Art Conventionally, an emergency call, which is mounted on a vehicle such as an automobile and performs a telephone call processing to a center having jurisdiction over an emergency call system such as a police station or an emergency call center via a base station of a communication carrier. System terminal equipment is known. In an emergency call system, in an emergency, the control unit sends data on the vehicle to the emergency call center via the emergency call communication means based on a signal from the emergency call transmission button pressed by the user or a sensor for detecting an accident. report.

[0003]

However, the conventional emergency call system terminal equipment cannot be used by connecting an externally connected device such as a car telephone at normal times other than the emergency call communication processing. In order to connect and use various externally connected devices, it is necessary to arbitrate the interface signal between the externally connected device and the emergency notification device and the interface signal between the control unit and the emergency notification device within the control unit. In addition, there is a problem that the control unit needs to be provided with many serial control signal interfaces, and control of software of the control unit becomes complicated.

The present invention has been made to solve the above-mentioned problems in the prior art, and can normally connect and use an externally connected device such as a car telephone at normal times other than the emergency call communication process. It is another object of the present invention to provide an emergency call system terminal device and an emergency call system that can perform an emergency call contact process even during a telephone call of an external connection device.

[0005]

In order to solve the above-mentioned problems, an emergency call system terminal device of the present invention provides an interface signal between an externally connected device and an emergency call notification device and an interface signal between a control unit and an emergency call notification device. A signal switching circuit for switching, and a power supply control circuit for turning on after turning off the power supply to the emergency call notification means, when it becomes necessary for the externally connected device to execute emergency call notification processing during a telephone call, According to a control signal from the control unit, the power supply to the emergency call notification unit is turned off and then turned on, and the signal switching circuit is switched to connect the control unit to the emergency call notification unit. If it becomes necessary to execute the emergency call notification process even while the connected device is making a telephone call, the emergency call notification process can be immediately executed.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is based on a signal from an emergency call transmission button or a sensor for detecting an accident which is mounted on a vehicle and pressed by a user in an emergency. In an emergency call system terminal device in which the control unit reports data on the vehicle to the emergency call center via the emergency call communication means, an external device connection interface for connecting an external connection device for telephone calls,
A signal switching circuit for switching between a signal from the external device connection interface and a signal from the control unit; and a control signal for turning off power supply to the emergency notification communication unit.
And a power supply control circuit that is turned on after outputting a signal, and the external connection device is connected to the emergency call notification means by the signal switching circuit, and during a telephone call, it is necessary to execute an emergency call notification process. If the control unit, together with the turn on after sending a control signal to turn off the power supply to the emergency call communication means to said power control circuit, said frettage
It is an emergency call system terminal device that makes a call request to the emergency call center, and in normal times other than emergency call contact processing, you can connect an external connection device such as a car phone and make a telephone call, When an emergency occurs, there is an effect that the telephone call by the externally connected device is cut off and the emergency call notification process can be executed promptly.

According to a second aspect of the present invention, there is provided an emergency call system terminal device according to the first aspect of the present invention, which controls the system and receives an emergency call transmission signal from the emergency call system terminal device to perform an emergency call. This is an emergency call system including an emergency call center that activates an emergency call, and has an effect of realizing an emergency call system in which the use value of the emergency call system terminal device is enhanced.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. (Embodiment) FIG. 1 is a block diagram showing a configuration of an emergency call system terminal device according to an embodiment of the present invention.
In FIG. 1, reference numeral 1 denotes an emergency notification system terminal device,
It is installed in vehicles such as automobiles, and in the event of an emergency such as a traffic accident or sudden illness, transmits the current vehicle position information and data such as registered vehicles to the police, emergency call center, etc., and requests an emergency vehicle dispatch. is there. 2 is a communication antenna,
Performing a process of transmitting a transmission signal from the emergency call notification means 11 to the base station of the communication carrier, and performing a process of outputting a reception signal from the communication carrier to the emergency notification communication means 11;
An emergency call transmission button 3 is pressed by a user in an emergency such as a traffic accident or sudden illness to generate an operation signal for starting transmission processing. Reference numeral 4 denotes a GPS antenna which receives position data and time data from GPS satellites. Reference numeral 5 denotes a microphone for inputting a transmission voice signal of a user who gets on a vehicle equipped with the emergency notification system terminal device 1 when making a hands-free call. Reference numeral 6 denotes a speaker that sounds a voice signal received from a police station, an emergency call center, or the like when performing a hands-free call. Reference numeral 7 denotes an external connection device having a telephone function, such as a car phone or a mobile phone.

In the emergency call system terminal device 1, 1
Reference numeral 1 denotes an emergency call communication means, which responds to a call request signal from the control unit 12 by using a telephone number input from the control unit 12 via a base station or the like of a communication carrier to a communication partner corresponding to the telephone number. When the call originating process is started and a call response from the other party, or a signal such as a busy signal, etc., during a call is received, it is recognized that the call has shifted to a call state, and voice call control or data communication control is performed. And outputs a signal to the control unit 12 indicating that the call has been transferred during the call to the control unit 12, and further transmits data such as the traveling direction and direction of the vehicle and the position information and the like input from the control unit 12. A process of making a call to the police or emergency call center corresponding to the telephone number corresponding to the telephone number via the base station or the like of the company is performed.

Reference numeral 12 denotes a control unit. The control unit 12 recognizes that an emergency call request has been made based on an operation signal from the emergency call transmission button 3 and sends the current position information to the position information acquisition processing unit 14 in order to start emergency call processing. Along with outputting a signal requesting information, the information such as the traveling direction and direction of the vehicle, and data such as position information are input from the position information acquisition processing unit 14,
Further, the telephone numbers of the police, the emergency call center, etc. are obtained from the storage unit 15, and a call request is made to the emergency call contact means 11 using the telephone numbers.
When receiving a call response from the other party corresponding to the telephone number or a signal such as a busy signal that shifts to a busy state from the emergency call notification unit 11, it recognizes that the state has shifted to the talking state, and performs position information acquisition processing. The information such as the traveling direction and the direction of the vehicle obtained from the unit 14 and the data such as the position information are transmitted to the corresponding telephone number corresponding to the telephone number via the base station of the communication carrier. A process for outputting a signal to be transmitted to the emergency call notification means 11 is performed.

A gyro sensor 13 generates information such as the traveling direction and direction of the vehicle. Reference numeral 14 denotes a position information acquisition processing unit, which inputs data from the gyro sensor 13 in response to a position information request signal from the control unit 12, and generates position information generated from data received by the GPS receiver 17 from the GPS antenna 4. Then, a process of inputting data such as the traveling direction and direction of the vehicle input from the gyro sensor 13 and outputting data such as position information input from the GPS receiver 17 to the control unit 12 is performed.

Reference numeral 15 denotes a storage unit, which stores information such as telephone numbers of the police and emergency call centers, registration numbers of vehicles equipped with the emergency call system terminal equipment 1, and registrants. The telephone number of the applicable police, emergency call center, etc.,
And a process of outputting information such as a registration number of a vehicle equipped with the emergency notification system terminal device 1 and a registrant. Reference numeral 16 denotes a hands-free system, which performs an echo canceling function and a howling preventing function in order to perform a hands-free call between a police station, an emergency call center, etc. and a user who gets on a vehicle equipped with the emergency call system terminal device 1. Etc. Reference numeral 17 denotes a GPS receiver.
A process of outputting data such as position information to the position information acquisition processing unit 14 from data input from the antenna 4 is performed.

Reference numeral 18 denotes a signal switching circuit, which controls the control signal path and the voice signal path of the emergency call communication means 11 in accordance with a control signal from the control section 12 to the hands-free system 16 or the control section 12
Or a function of switching to the external device connection interface 19. Reference numeral 19 denotes an external device connection interface for connecting the external connection device 7 for making a telephone call from outside the emergency notification system terminal device 1. Reference numeral 20 denotes a power supply control circuit, which has a function of once turning off the power supply to the emergency notification communication unit 11 and then turning on the power supply in response to a control signal from the control unit 12.

FIG. 2 shows an example of the power supply control circuit 20. The power supply control circuit 20 includes a transistor TR and a resistor R1,
The transistor TR has a base electrode connected to the control unit 12 via the resistor R1, an emitter electrode connected to a power supply line to the emergency notification means 11, and a collector electrode connected to the emergency notification means. 11 is connected. When supplying power to the emergency notification means 11,
Control unit 12 outputs an “L” signal. When the power supply to the emergency notification unit 11 is cut off, the control unit 12 outputs an “H” signal. When the emergency notification means 11 has a mobile phone function, a power supply line is a unit power control signal line of a connector called a 16-core interface or a power supply line.

Next, the operation of this embodiment will be described. In FIG. 1, at normal times other than the emergency call transmission process, the position information acquisition processing unit 14 periodically acquires the current position information of the vehicle from an external device such as a navigation device that generates position information such as longitude and latitude. Alternatively, while inputting data from the gyro sensor 13 for generating information such as the traveling direction and direction of the vehicle, the GPS
A process of generating position information is performed based on data received from the S antenna 4, vehicle speed pulse signal data output according to the number of times the wheel has rotated, and the like.

In an emergency such as a traffic accident or sudden illness, the user presses the emergency call button 3. The emergency call transmission button 3 outputs an operation signal indicating that the button has been pressed by the user to the control unit 12. The control unit 12 outputs a signal requesting the current position information to the position information acquisition processing unit 14.
In response to the position information request signal from the control unit 12, the position information acquisition processing unit 14 inputs data from the gyro sensor 13 that generates information such as the traveling direction and direction of the vehicle, and the GPS receiver 17 4 to input data such as position information generated from the data received from.
The position information acquisition processing unit 14 stores data such as the traveling direction and direction of the vehicle input from the gyro sensor 13 and the GPS information.
Data such as position information input from the receiver 17 is output to the control unit 12.

The control unit 12 obtains the telephone numbers of the police and the emergency call center from the storage unit 15 and makes a call request such as a telephone call to the emergency call contact means 11 using the telephone numbers. Emergency call notification means 11 uses telephone antenna 2 to start a telephone call process to the other party corresponding to the telephone number via the base station of the communication carrier. When receiving an outgoing call response from the other party or a signal such as a busy signal that shifts to a busy state, the emergency call notification unit 11 recognizes that the state has shifted to the talking state, and shifts to voice call control or data communication control. At the same time, it outputs a signal to the control unit 12 to notify that the call has been transferred. The control unit 12 determines that the call was successful, and transmits the information such as the traveling direction and the direction of the vehicle obtained from the position information acquisition processing unit 14 and the data such as the position information via the base station of the communication carrier. Then, a process of making a call to the police, the emergency call center, or the like corresponding to the telephone number corresponding to the telephone number is performed.

When the control section 12 completes the data communication processing for transferring data such as position information to the police, an emergency call center, etc., the control section 12 shifts to a voice call through the hands-free system 16. When shifting to a voice call, the voice signal received from the emergency call notification means 11 is subjected to processing such as echo cancellation by the hands-free system 16 and output as voice from the speaker 6. The audio signal input from the microphone 5 is subjected to processing such as echo cancellation by the hands-free system 16, and is output to the emergency call communication means as a transmission audio signal. At the time of a voice call, a voice call is made between the user and the police or an operator of the emergency call center, and a report on an accident situation or the like is executed by voice.

On the other hand, in normal times other than the emergency call communication process, the emergency call system terminal device 1 permits the external connection device 7 of the emergency call system terminal device 1 to use the emergency report communication means 11. When the externally connected device 7 makes a telephone call or the like, the control unit 12 sends the emergency call notification unit 11 and the external device connection interface 1 to the signal switching circuit 18.
9 is output. When the emergency call notification means 11 has a mobile phone function, it performs telephone call control using a signal line such as a 16-core interface serial signal which is an interface signal of the mobile phone function. The signal switching circuit 18 connects a signal line, such as an uplink serial control signal, between the external device connection interface 19 and the emergency notification communication means 11 according to a control signal from the control unit 12, so that the external connection device 7 Telephone call control is performed through the communication means 11.

When executing emergency call notification processing such as pressing the emergency call transmission button 3 during a telephone call of the external connection device 7, the control unit 12 sends a control signal to the power supply control circuit 20 to send an emergency call. The power supply to the communication means 11 is temporarily turned off to forcibly end the telephone call with the externally connected device 7, and is immediately turned on to shift the emergency call communication means 11 to a standby state. Then, a control signal is sent to the signal switching circuit 18 to switch a signal line such as an uplink serial control signal to a connection between the emergency report communication unit 11 and the control unit 12, and to transmit an emergency report based on an operation signal from the emergency report transmission button 3. Start processing.

[0021]

As is apparent from the above description, the emergency notification system terminal device of the present invention is a signal switching device for switching interface signals between an externally connected device and an emergency notification device, and between a control unit and an emergency notification device. Circuit, and a power supply control circuit for turning on and off the power supply to the emergency call notification means, and when the external connection device needs to execute the emergency call notification process during a telephone call, the control unit The power supply to the emergency call communication means is turned off and then turned on by the control signal of, and the signal switching circuit is switched so that the control unit is connected to the emergency call communication means. In particular, when it is necessary to execute the emergency call notification process, there is an effect that the emergency call notification process can be promptly executed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an emergency call system terminal device according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a power supply control circuit according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Emergency call system terminal device 2 Communication antenna 3 Emergency call transmission button 4 GPS antenna 5 Microphone 6 Speaker 7 External connection device 11 Emergency call communication means 12 Control unit 13 Gyro sensor 14 Location information acquisition processing unit 15 Storage unit 16 Hands-free system 17 GPS receiver 18 Signal switching circuit 19 External device connection interface 20 Power control circuit

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields investigated (Int. Cl. ⁷ , DB name) G08B 25/08 G08B 25/10 B60R 9/00-11/06 H04M 1/00-11/04 H04B 7 / twenty four

Claims (2)

(57) [Claims] 1. A control unit, based on a signal from an emergency call transmission button pressed by a user or a sensor for detecting an accident, which is mounted on a vehicle and pressed by a user in an emergency, causes a control unit to transmit data about the vehicle via an emergency call communication unit. In an emergency notification system terminal device for notifying an emergency notification center, an external device connection interface for connecting an external connection device for telephone calls, and a signal for switching between a signal from the external device connection interface and a signal from the control unit The switching circuit and the power supply to the emergency notification means are turned off.
A power control circuit that turns on after outputting a control signal for connecting the external connection device to the emergency call communication means by the signal switching circuit, and performs an emergency call communication process during a telephone call. Occurs, the control unit sends a control signal to the power supply control circuit to turn on and then turn off the power supply to the emergency call notification unit, and also issues a call transmission request to the emergency call center. emergency call system terminal equipment, characterized in <br/> be performed. 2. An emergency call system terminal device according to claim 1, further comprising: an emergency call center that controls the system and receives an emergency call transmission signal from the emergency call system terminal device to issue an emergency dispatch. Emergency call system.