JPH0344708B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for listening to voices inside a car, and more particularly to a method for listening to voices inside a car from a remote location using a car telephone system.

<Prior Art> There is an anti-theft device that prevents automobiles from being stolen. If someone attempts to steal a vehicle equipped with such an anti-theft device by opening the door of the vehicle, subjecting the vehicle to a substantial shock, or opening the trunk, the anti-theft device will activate, sound the siren, or Flashing headlights prevent theft.

However, while sirens and flashing headlights are effective when there are people near the car, they cannot effectively prevent theft when there are no people or at night. For this reason, the applicant of the present application has proposed a method of transmitting the occurrence of an abnormality to a remote control unit and generating an alarm from the remote control unit to notify the user of the abnormality.

<Problems to be solved by the invention> By the way, the shock sensor may operate due to an external force even if the car is not actually stolen, or the noise sensor may operate due to excessive noise outside the car, or other problems. The remote control unit may generate an alarm for this reason, and if the car is actually being stolen, there may be a thief and it may be dangerous to rush there alone. For this reason, when an alarm is issued from the remote control unit, there are cases where it is desirable to confirm the condition of the vehicle before rushing to the vehicle.

However, until now there was no way to secretly check the status of a car from a remote location.

From the above, it is an object of the present invention to provide a method that allows you to check the status of a car from a remote location (for example, your home), such as whether or not it is actually being stolen, without having to rush to the car when an abnormality occurs. It is.

Another object of the present invention is to provide an in-vehicle voice listening method for checking the situation of a car by listening to in-vehicle voices.

<Means for Solving the Problems> FIG. 1 is a block diagram of a system for realizing a method for listening to voices in a car according to the present invention.

MTS is a mobile phone system and MSP is an anti-theft system.

The car telephone system MTS includes a control unit 101, a transceiver unit 102,
It has a T-connector 103 and an antenna 104.

The control unit 101 is a control section 101
a, microphone 101b, speaker 101c, operation/
It has a display section 101d and the like.

The theft prevention system MSP includes a main body 201 that includes a sensor unit that detects abnormalities related to theft, a keyboard-based operating unit, a microcomputer-based control unit, etc., and the anti-theft function of the main unit (anti-theft device) 201. It has a remote control unit 202 called a pager that turns on and off from outside the vehicle and outputs an alarm in the event of an abnormality.

The control unit 101 and the transceiver unit 102 are connected to each other by a plurality of power control lines, digital data transmission/reception lines, audio lines, etc., so that they can communicate with each other, and the T-connector 103 is connected to the transceiver unit 102 so that they can communicate with each other. Main body part 201 of prevention system MSP
is connected to.

<Function> When the driver leaves the car, the anti-theft system MSP is activated and the car telephone system MTS is turned off.

In such a situation, the anti-theft system MSP
When the theft prevention system MSP detects an abnormality related to theft, the main unit 201 of the anti-theft system MSP notifies the remote control unit 202 of the fact, and also turns the car phone system MTS into the ignition-on state and power-on state to connect the external phone. Make it callable from the device.

The remote control unit 202 receives the notification of the occurrence of the abnormality and generates an alarm using a buzzer or the like, and the owner of the automobile knows from this alarm that an abnormality has occurred in his/her automobile.

By the way, even if the item is not stolen, the shock sensor may be activated due to an external force, or the noise sensor may be activated due to excessive noise outside, and the remote control unit may generate an alarm. Furthermore, it is dangerous to rush to the car alone while the car is actually being stolen because the thief is there. Therefore, there are cases where the user wants to check the status of the car before rushing to the car. In such a case, call the car's telephone system MTS from outside with a telephone,
Next, key in a predetermined code for listening to the in-car audio.

Upon receiving the in-vehicle voice listening code, the car telephone system MTS transmits the in-vehicle voice collected by the microphone 101b from the antenna 104 via the transmitter of the transceiver unit 102. This makes it possible to listen to the sounds inside the car from a remote location, and to check the status of the car.

<Example> FIGS. 2 and 3 are block diagrams of a system for realizing the in-vehicle audio listening method according to the present invention.
Figure 2 is a block diagram of the car telephone system MTS.
FIG. 3 is a block diagram of the theft prevention system MSP.

In Figure 2, MTS is a cellular car phone system, and control unit 1
01, a transceiver unit 102, T-connectors 103a and 103b, and an antenna 104.

The control unit 101 electrically includes a control section 101a composed of a computer, and a microphone 101.
b, speaker 101c, and operation/display unit 101
d, audio path switchers 101e and 101f, switch 101g, and power supply control circuit 101h.
Mechanistically, it consists of a hardware set HDS and a base unit BSU, as shown in Figure 4.

On the back of the handset HDS is a microphone 101b,
A speaker 101c is provided, and as shown in FIG.
Function key section 101d with END etc.
-2, display section 10 that displays the dialed number
1d-3 is provided.

As shown in Fig. 4, the base unit BSU has a panel section 101d-4, a speaker receiving section SRS, and a microphone receiving section MRS, and the panel section 101d-4 has a power on/off switch PW, an AUX switch, and a ringer speaker. An alert volume ALV for controlling the level, a handset volume HSV for controlling the handset listening volume, and a display section DSP for various displays are provided. still,
Numeric keypad section 101d-1 of handset HDS,
Function key section 101d-2, display section 10
1d-3 and the panel section 101d-4 of the base unit BSU to form the operation/display section 10 shown in FIG.
1d is configured.

The transceiver unit 102 has a receiving section 102a.
, a transmitting section 102b, and a duplexer 102c that connects the antenna 104 to the receiving section and the transmitting section as appropriate.
and a synthesizer 1 that generates a predetermined frequency signal.
02d, a control unit 102e, a demodulation unit 102f that demodulates digital data, a modulation unit 102g that modulates digital data, and a switch 102h that switches and outputs digital data and audio from a microphone.
, an audio path switch 102i that switches and outputs an audio signal from the receiver 102a and a tone from a tone generator (not shown), and a power supply control circuit 102j.
have.

The control unit 101 and the transceiver unit 102 are interconnected by a plurality of power and power control lines PL, a plurality of digital data transmission/reception lines DL, a reception audio line SLR, a transmission audio line SLT, etc., and a T-connector 103a. , 103b connects necessary lines to the theft prevention system MSP.

In FIG. 3, MSP is an anti-theft system that includes a main body (anti-theft device) 201 and a remote control unit 202 called a pager that turns on/off the anti-theft function from outside the vehicle and outputs an alarm in the event of an abnormality. have.

The main body part 201 includes a sensor part 201a that detects abnormalities related to theft, and an operation part 2 having a keyboard structure.
01b, a control section 201c having a microcomputer configuration, and a transmitting/receiving section 201d. Sensor section 201a
is a door sensor DS that detects the opening and closing of a door, a shock sensor SS that detects a shock exceeding a predetermined value,
It has a noise sensor NS that detects when the noise inside the vehicle exceeds a predetermined value, and other sensors that detect whether the trunk is opened or closed. The operation unit 201b has a numeric keypad and a function key, which are operated when inputting a personal identification number (ID code), activating the anti-theft function of the system, or deactivating the anti-theft function. . The transmitting/receiving unit 201d includes a transmitting unit 201d-1, a receiving unit 201d-2, a switching unit 201d-3 that connects the antenna AT to the transmitting unit and the receiving unit as appropriate, and a control unit 2.
It has a modulating section 201d-4 that modulates digital data output from the receiving section 201d-2, and a demodulator 201d-5 that demodulates the signal input from the receiving section 201d-2 and inputs it to the control section 201c.

The remote control unit 202 includes a transmitter 202a,
The receiving section 206b and the antenna AT' are connected to the transmitting section 202.
a and a receiving section 202b as appropriate.
c, a modulation unit 202d, a demodulation unit 202e, a control unit 202f, a key AK for activating the anti-theft function of the anti-theft system MSP, and a key DAK for canceling the activation state of the anti-theft function. 202g, and a buzzer 202h that outputs an alarm in the event of an abnormality.

The in-vehicle audio listening method according to the present invention will be explained below in accordance with the flowchart of FIG.

When the driver leaves the car, activates the anti-theft system MSP and activates the power on/off switch PW (4th point) of the car phone system MTS.
(Figure) to turn off the power of the car phone system.

(1) In such a situation, the theft prevention system
The control unit 201c of the MSP constantly monitors whether the sensor unit 201a detects an abnormality.

(2) When an abnormality occurs and a predetermined sensor is turned on, the control unit 201c of the anti-theft system MSP immediately recognizes this and inputs a predetermined code signal indicating the occurrence of an abnormality to the remote control unit 202 via the transmitting/receiving unit 201d. .

(3) When the control unit 202f of the remote control unit 202 receives the abnormality code, it immediately turns on the buzzer 20.
2h is driven to output an alarm. Note that the buzzer sound is stopped after a predetermined time or by pressing a stop key (not shown) provided on the key portion 202g.

(4) Furthermore, when an abnormality occurs, the control unit 201c turns the mobile telephone system MTS into an ignition-on state and a power-on state. That is, the ignition enable signal and the power enable signal are sequentially output to the power control line, and time measurement is started.

(5) The control unit 201c appropriately compares the elapsed time t with the preset duration T _p and checks whether t>T _p holds.

(6) Then, if t>T _p, the control unit 201c turns the car telephone system MTS into an ignition-off state and a power-off state.

(7) On the other hand, if t≦T _p , the control section 102e of the transceiver unit 102 checks whether it has been called from the outside.

(8) When the control unit 102e of the transceiver unit 102 of the mobile phone system MTS is called, it performs normal incoming call processing and puts the car phone system in a hook-off state. Due to the above,
Signals from the external telephone set can now be received by the car telephone system. Note that the audio lines SLR and SLT between the control unit 101 and the transceiver unit 102 are connected to each audio path switch 101e, 101f, 102i, and 102h.
It has been cut by.

(9) In this state, the control section 102e of the transceiver unit 102 waits for a code for listening to in-vehicle audio (in-vehicle audio listening code) to be sent. Note that it is necessary to use a telephone with a pushbutton as the external telephone in order to send the code, etc.

(10) Now, if the in-car audio listening code is not sent, check whether t > T _p until it is sent. Furthermore, t>
If T _p is reached, jump to step (6).

(11) When the in-vehicle audio listening code is sent, the control section 102e of the transceiver unit 102 sends a message to that effect to the control section 1 of the control unit 101.
01a via the data line DL, and
The switch 102h is used to connect the outgoing audio line SLT and the transmitter 102b. Further, the control section 101a of the control unit 101 causes the audio path switch 102f to output the in-vehicle audio signal from the microphone 101b to the outgoing audio line SLT. As described above, the in-vehicle sound collected by the microphone 101b is transmitted from the antenna 104 via the transmitter 102b.

(12) After that, the control unit 102e checks whether the other party has hung up the receiver and the line has been disconnected.

(13) If the line is disconnected, hook it off and perform the processing from step (6) onwards.

(14) If the line is not disconnected, the in-vehicle audio will continue to be transmitted until t>T _p . And t
>T _p , jump to step (6).

Although the above configuration is such that the in-vehicle audio is transmitted when the in-vehicle audio listening code is received, it is also possible to configure the in-vehicle audio to be transmitted only upon a call.

Also, in the above, the voice collected by the microphone 101b installed in the handset HDS is transmitted, but if a handsfree (having a microphone and speaker) is installed, the voice can be collected by the handsfree microphone. It can also be configured to transmit in-vehicle audio.

<Effects of the Invention> According to the present invention, when an abnormality related to theft occurs, the remote control unit is notified of the occurrence of the abnormality, and the car phone system is placed in a state where it can be called from the outside, and the car phone system is activated by the call from the outside. Since the system is configured to transmit the sound inside the car collected by the microphone of the car to the called party, the sound inside the car can be heard from a remote location, and therefore the situation of the car can be grasped with certainty.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the principle of the present invention, Fig. 2 is a block diagram of a car telephone system, Fig. 3 is a block diagram of an anti-theft system, Fig. 4 is an external view of the control unit, and Fig. 5 is a surface view of the handset. , FIG. 6 is a flowchart of the process of the present invention. MTS...Car telephone system, MSP...Anti-theft system, 101...Control unit, 101b...Microphone, 101f...Audio path switcher, 102...Transceiver unit, 10
2e...Control unit, 102h...Switching device, 201...
...Main unit, 202...Remote unit, SLS,
SLT...Audio line.

Claims (1)

[Scope of Claims] 1. An automobile equipped with an anti-theft system that includes a car telephone system, an on-vehicle anti-theft device that prevents theft of the car, and a remote control unit that activates and deactivates the anti-theft function of the anti-theft device. In the in-vehicle audio listening method, the anti-theft device is equipped with a sensor for detecting abnormality occurrence,
Based on the sensor output when the anti-theft function is activated,
It monitors whether an abnormality has occurred in the car, and if an abnormality occurs, it transmits data indicating the occurrence of the abnormality to the remote control unit by radio, and also turns on the power to the car telephone system and makes it ready to answer incoming calls from outside. The remote control unit receives the data indicating the occurrence of the abnormality and generates an alarm, and the car phone system receives an incoming call from outside and also receives a predetermined code for listening to the audio inside the car. A method for listening to in-vehicle voices, characterized by transmitting in-vehicle voices collected by a microphone of a car telephone system to a called destination.