JP2000006761A - Crime prevention warning device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To issue an alarm only when a real criminal act occurs by preventing erroneous warning caused by the operation of a crime prevention warning device by disturbance elements other than real criminal acts, such as automobile vibration by strong wind or rain, the explosive sound of an aircraft, the running of a vehicle such as a large-sized truck traveling nearby, regarding the crime prevention warning device loaded on an automobile for prevention of crime. SOLUTION: A crime prevention warning device is provided with a plurality of sensors including a human body sensor 10 and a sound sensor 12 for detecting abnormalities, a control unit for receiving detecting signals from the sensors, performing signal processing before issuing an alarm, and outputting a warning signal upon receiving detecting signals from at least the two sensors or more including the human body sensor 10 and the sound sensor 12, and an alarm issuing unit for issuing an alarm based on the warning signal from the control unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle security alarm system which issues an alarm when an abnormality occurs in a vehicle such as an automobile and prevents crime.

[0002]

2. Description of the Related Art
2. Description of the Related Art There is known a vehicle security alarm device in which when a vehicle such as a vehicle (hereinafter, a vehicle is described as a representative) has an abnormality, the abnormality is detected by a sensor and a warning sound is issued. Such a conventional vehicle security alarm generally includes only a single sensor (for example, an impact sensor or a sound sensor) as an abnormality detection sensor. When the sensor detects an abnormality, for example, the impact sensor detects an impact. When the sound is detected or when the sound sensor detects the sound, an alarm sound is automatically and immediately generated, which causes the following inconvenience.

For example, the sensor reacts to the impact or shaking due to strong wind or heavy rain, or to the explosion of an aircraft, traffic of a large vehicle such as a truck, backfire noise, traffic of people, etc. For example, the sensor outputs an abnormality occurrence signal due to disturbance elements other than the original human criminal act such as a criminal act, thereby causing an alarm sound.

[0004] This alarm sound is intended to inform the surroundings that a criminal act such as theft has occurred, and is a loud sound. Therefore, a loud alarm sound is emitted despite no criminal act. If it occurs and keeps ringing, it will cause great trouble to the surrounding area.

[0005] Because of these problems, there has been a hesitation in using such a vehicle security alarm.
The fact is that it is not fully utilized, although it is known to be effective for crime prevention.

[0006]

The vehicle security alarm of the present invention has been devised to solve such a problem. Thus, a vehicle security alarm device mounted on a vehicle such as an automobile for performing crime prevention, comprising a plurality of sensors including first and second sensors for detecting abnormality, and A control unit that performs signal processing in advance before receiving a detection signal from the sensor and issuing an alarm, and outputs an alarm signal when receiving a detection signal from at least the first and second two or more sensors. And an alarm issuing unit for issuing an alarm based on an alarm signal from the control unit.

According to a second aspect of the present invention, in the first aspect, the first sensor and the second sensor are different types of sensors.

According to a third aspect of the present invention, in the second aspect, a third sensor of a different type from the first and second sensors is further provided as the sensor, and detection signals from the three types of sensors are provided. The control unit outputs a warning signal to the warning issuing unit when receiving the warning, and issues a warning.

According to a fourth aspect of the present invention, after the detection signal from the first sensor in any one of the first to third aspects,
The control unit determines that the abnormality has truly occurred when the detection signal from the second sensor is present within the first set time, and outputs a warning signal to the warning notification unit to generate a warning. It is characterized by having been done.

According to a fifth aspect of the present invention, in the third aspect, the detection signal from the second sensor is provided within the first set time after the detection signal from the first sensor is provided, and When there is a detection signal from the third sensor within the set time, the control unit determines that the abnormality has truly occurred, outputs an alarm signal to the alarm issuing unit, and issues an alarm. It is characterized by having.

According to a sixth aspect, in the fourth aspect, a human body detection sensor for detecting a human body and a sound sensor for detecting sound are provided as the sensors, and the human body detection sensor is used as a first sensor. Further, the sound sensor is used as a second sensor, and a warning is issued when a detection signal from the sound sensor is detected after a detection signal from the human body detection sensor.

According to a seventh aspect of the present invention, in the fourth aspect, a human body detection sensor for detecting a human body, an impact sensor for detecting an impact applied to a vehicle, or an inclination sensor for detecting an inclination of the vehicle are provided as the sensors. The human body detection sensor is used as a first sensor, and the impact sensor or the inclination sensor is used as a second sensor. After the detection signal from the human body detection sensor, the detection signal from the impact sensor or the inclination sensor is used. It is characterized by issuing an alarm when there is.

According to an eighth aspect of the present invention, in the fifth aspect, a human body detection sensor for detecting a human body, an impact sensor for detecting an impact applied to a vehicle, and an inclination sensor for detecting an inclination of the vehicle are provided as the sensors. The human body detection sensor is used as the first sensor, the impact sensor is used as a second sensor, and the tilt sensor is used as a third sensor, and after the detection signal from the human body detection sensor, the impact sensor is used. The alarm is issued when there is a signal from the sensor, and thereafter, when there is a detection signal from the tilt sensor.

According to a ninth aspect of the present invention, there is provided a vehicle security alarm device mounted on a vehicle such as an automobile for performing crime prevention. The sensor detects abnormalities, and receives a detection signal from the sensor and issues an alarm. A control unit that outputs a warning signal after performing signal processing in advance, and an alarm notification unit that issues a warning based on the warning signal from the control unit, and the control unit is configured to output the same signal from the same sensor. If the detection signal is interrupted and repeated twice or more within the set time, it is determined that a true abnormality has occurred, an alarm signal is output, and the alarm issuance unit issues an alarm. Features.

[0015]

As described above, the security alarm system according to the first aspect includes a plurality of sensors including the first and second sensors, and outputs detection signals from the plurality of sensors before issuing an alarm. In the case of this security alarm device, signal processing is performed in advance, and when a detection signal from two or more sensors is received, an alarm signal is output for the first time and an alarm is issued from the alarm issuing unit. It is possible to more accurately determine whether the abnormality occurred due to a criminal act of a person aiming at a vehicle or the like, that is, whether a criminal act was performed or not, and that a malfunction caused a loud alarm sound. Can be prevented.

The first and second sensors or a plurality of sensors including these sensors are all of the same type, and it is possible to perform signal processing by providing each of the sensors at a different position on the vehicle. However, it is desirable that the first sensor and the second sensor be different types of sensors (claim 2). By using such a different type of sensor as a sensor, it becomes possible to more accurately detect an abnormality caused by a criminal act such as aiming at a vehicle.

In the present invention, a third sensor different from the first sensor and the second sensor is further provided, and when a detection signal is received from the three sensors, an alarm is issued from the control unit. A warning signal can be output to the section to generate a warning (claim 3). In this case, an abnormality caused by a criminal act by a person can be detected with higher accuracy, and the occurrence of a false alarm due to a disturbance element can be more effectively prevented.

According to a fourth aspect of the present invention, when there is a detection signal from the second sensor within a first set time which is set in advance after a detection signal from the first sensor is generated, a true abnormality occurs. The alarm signal is output from the control unit when it is determined that the operation has been performed, and an alarm is issued from the alarm issuance unit. By doing so, a malfunction and an erroneous alarm can be more effectively prevented.

If different types of sensors are used as the first sensor and the second sensor, and an alarm is issued when there is a detection signal from the sensors with a predetermined time difference, for example, a disturbance element If the sensors are of the same type, there is a possibility that the multiple sensors will output an abnormality detection signal at the same time. It is possible to more accurately detect and determine different types of abnormalities that are incidental and occur with a time lag.

According to a fifth aspect of the present invention, another type of third sensor is provided, and when a detection signal is detected from the first sensor, the second sensor, and the third sensor with a predetermined time difference, respectively, a true signal is detected. It is determined that an abnormality has occurred and an alarm is issued. According to the crime prevention alarm device of the fifth aspect, the abnormality caused by the criminal act of a person is detected more accurately and the original An alarm can be issued.

According to a sixth aspect of the present invention, a human body detection sensor is used as a first sensor, a sound sensor for detecting sound is used as a second sensor, and detection from the sound sensor is performed after a detection signal from the human body detection sensor. When there is a signal, the control unit determines that an abnormality has truly occurred, and an alarm issuance unit issues an alarm.

In general, when an object inside the vehicle is stolen or mischief is performed on the vehicle body, such as when aiming at a vehicle, a person first approaches the vehicle and pryes open the doors of the vehicle body to invade the inside of the vehicle. Steal and so on. Therefore, according to claim 6, first, the approach of the human body is detected by the human body detection sensor, and then the sound generated when the door of the vehicle body is opened is detected by the sound sensor, and when these are detected with a certain time difference, an abnormality is detected. If it is determined that an error has occurred, the influence of the above-described disturbance element can be eliminated, and an abnormality caused by a human action can be accurately grasped.

According to a seventh aspect of the present invention, the human body detection sensor is used as a first sensor, while an impact sensor for detecting an impact applied to the vehicle or an inclination sensor for detecting an inclination of the vehicle is used as the second sensor. When the impact sensor or the inclination sensor detects an abnormality with a predetermined time difference after the abnormality is detected, a warning is issued assuming that an abnormality caused by human action has occurred. Abnormalities caused by actions can be detected more accurately, and an alarm can be issued.

According to the eighth aspect of the present invention, an abnormality occurs when there is an impact detection signal from the impact sensor after the abnormality detection signal from the human body detection sensor, and then there is an inclination detection signal from the inclination sensor. In such a case, an abnormality caused by a criminal act of a person can be accurately determined, and a warning can be correctly issued.

Next, the security alarm device according to the ninth aspect determines that an abnormality has occurred when an abnormality detection signal from the same sensor is intermittently repeated twice or more within a set time, and determines that an abnormality has occurred. And an alarm is issued in the alarm issuance unit, even in this case, as compared with the case where the alarm is issued immediately after a detection signal is received from a single sensor as in the conventional case. It is possible to more accurately detect a true abnormality and issue an alarm.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment in which the present invention is applied to a security alarm system for a vehicle will be specifically described with reference to the drawings. In FIG. 1, reference numeral 10 denotes a human body detection sensor, 12 denotes a sound sensor for detecting a contact sound to the automobile 18, 14 denotes an impact sensor for detecting an impact applied to the automobile 18, and 16 denotes an inclination for detecting the inclination of the automobile 18. It is a sensor. These sensors 10, 12, 14, and 16 can be mounted on the automobile 18 at appropriate positions.

Here, as the human body detecting sensor 10, an ultrasonic sensor, a radio wave sensor, an infrared sensor, a far infrared sensor,
A laser sensor, an optical sensor, or the like can be used.

Various types of sound sensor 12 can also be used. In particular, by providing a microphone and a high-pass filter, a low-pass filter, a band-pass filter, and the like, it is possible to detect only a sound of a specific frequency.

In particular, when a mischief such as coin damage or an aim on the vehicle is performed on the automobile 18, a relatively high frequency sound such as a metal sound is likely to be generated.
It is advantageous to use a pitch sensor 12 that selectively picks up high frequency sounds. In addition, various types of sensors can be used as the impact sensor 14 and the inclination sensor 16.

FIG. 2 shows an example of the configuration of a security alarm device according to the present embodiment. In FIG. 2, reference numeral 20 denotes signal processing upon receiving detection signals from the human body detection sensor 10 and the sound sensor 12;
The control unit determines that an abnormality has occurred when a predetermined condition is satisfied, and outputs an alarm signal to the alarm issuing unit 22. The alarm issuing unit 22 issues an alarm sound upon receiving the alarm signal. Here, the alarm issuing unit 22 can issue various alarm sounds such as a buzzer, a bell, a siren, and a horn.

The control unit 20 may perform the signal processing by a logic circuit, or may perform the signal processing by using a microcomputer and operating it according to a predetermined program. This is the same in the following embodiments.

FIG. 3 is a flowchart showing the control contents of the control unit 20 in this embodiment, that is, the signal processing contents. As shown in the figure, in this example, after the human body detection sensor 10 detects the approach of the human body to the car 18, an alarm is issued when the sound sensor 12 detects an abnormal sound within a predetermined time. .

More specifically, when the human body detection sensor 10 detects the approach of the human body in step S10 and outputs a signal, in step S12, the sound sensor 12 outputs the signal from the sound sensor 12 within a predetermined time t ₁ second (here, t ₁ = 5). It is determined whether or not there is a detection signal, and within _one second t1, the sound sensor 1
When there is a detection signal from the control unit 2, the control unit 20 outputs an alarm signal (step S14). Then, in response to the alarm signal, the alarm issuance unit 22 issues an alarm (step S16).

As described above, two types of sensors, a human body detection sensor 10 and a sound sensor 12, are provided as sensors for detecting abnormalities. First, after the human body detection sensor 10 detects an abnormality, the sound sensor is detected within a predetermined time. If an alarm is issued when the abnormal sound is detected, the vibration of the automobile 18 due to natural phenomena such as strong wind or heavy rain, the explosion of aircraft, the traffic of vehicles such as trucks, the backfire noise, the traffic of people, etc. Eliminate the influence of disturbance elements as much as possible, detect only criminal acts by human beings, avoid malfunctions and false alarms by disturbance elements as much as possible, detect original crimes, and issue alarms accordingly. It can be carried out. Therefore, it is possible to avoid a situation in which a loud alarm sound is issued due to a malfunction as in a conventional security alarm device, and the surrounding area is inconvenienced.

FIG. 4 shows an example in which signal processing is performed in a pattern different from the above when the human body detection sensor 10 and the sound sensor 12 are used, as shown in FIG. In this case, first, an abnormal sound is detected by the sound sensor 12 (step S18), and thereafter, when a human body movement is detected by the human body detection sensor 10 (step S20), an alarm signal is output from the control unit 20 (step S18). S14) The alarm issuance is issued from the alarm issuance section 22 (step S16).

In the case of the example shown in FIG. 3, for example, when a person approaches and performs a mischief such as damaging the car body with a coin, an alarm sound is generated at the stage when the coin touches the car body, and the mischief is detected beforehand. On the other hand, in the example of FIG. 4, an alarm sound is generated when a person tries to move or leave after damaging the vehicle body with a coin.

Therefore, in the embodiment shown in FIG. 3, mischief can be prevented beforehand, while in the embodiment shown in FIG. 4, an alarm sound may be emitted after mischief is performed. Although inferior to the embodiment shown in FIG. 3, it is possible to reliably detect that mischief has been performed and to issue an alarm sound.

By the way, as shown in FIG. 5, when there is a detection signal from either the human body detection sensor 10 or the sound sensor 12 (step S100), an alarm is immediately issued (step S102). When an experiment was conducted with the alarm device mounted on the automobile 18, the automobile 18
Detects the movement of people passing around the area and issues alarms frequently, or detects the brake noise (including high-frequency sounds) of bicycles passing around and issues alarms frequently. As a result, erroneous alarms frequently occurred in addition to the original theft prevention. However, an experiment was carried out by installing a security alarm device according to the embodiment of the present invention in which signal processing was performed according to the processing contents shown in FIG. Was performed, the erroneous alarm was not issued because the probability of the sound sensor 12 reacting within 5 seconds was very low, although the movement of a person moving around was detected.

When the door panel of the car 18 was scratched by approaching the car to reproduce the mischief of the car 18, no alarm was issued just by approaching. An alarm has been triggered. This proved that the security alarm was working effectively.

Further, an experiment was carried out with the security alarm device of the embodiment of the present invention adapted to perform signal processing in the pattern shown in FIG. The alarm sounded after the body of the car 18 was scratched due to the human body moving. In this case, although it is not always enough to prevent mischief,
At the time of the mischief, it was confirmed that the security alarm functioned effectively.

FIG. 6 shows another embodiment in which a human body detection sensor 10, an impact sensor 14,
An alarm is issued from the alarm issuance section 22 after three types of sensors, that is, the inclination sensor 16, are subjected to signal processing of detection signals from the sensors in advance.

FIG. 7 shows an example of the content of the signal processing by the control unit 20. As shown in FIG. 7, after the human body detection sensor 10 detects a human body (step S10), t ₂ If there is a detection signal from the impact sensor 14 or the inclination sensor 16 within the second (here, t ₂ = 10) (step S22), the control unit 20 is not activated for the first time.
Is determined to have caused an abnormality, an alarm signal is output (step S14), and the alarm issuance unit 22 that has received the alarm signal issues an alarm (step S16).

In general, when a person commits criminal acts against the vehicle 18 such as aiming at the vehicle, the person first approaches the vehicle 18 and then opens the door or trunk of the vehicle 18 to steal articles inside the vehicle or mischief. Is done. Therefore, when a specific action is performed on the vehicle 18 in such an action pattern, the approach of a person can be detected by the human body detection sensor 10 and the subsequent opening of the door or trunk of the vehicle 18 can be detected. For actions,
This can be detected by the impact sensor 14 or the inclination sensor 16 which detects the impact or inclination of the automobile 18.

Accordingly, when the detection signals from the sensors are processed in advance according to the processing contents shown in FIG. 7 and then an abnormality is determined and an alarm is output, a disturbance element is satisfactorily eliminated. Then, it is possible to accurately detect a criminal act, a mischief, or the like due to a human act, and issue an alarm.

FIG. 8 shows a case where a signal is processed in a different pattern from that of FIG. 7 when an alarm is issued based on detection signals from the three types of sensors, namely, the human body detection sensor 10, the impact sensor 14, and the inclination sensor 16. In this example, after a detection signal is received from the human body detection sensor 10 (step S10), first in step S24, t ₂ seconds (here, t ₂ =
It is determined whether there is a detection signal from the impact sensor 14 within 10), and if there is a detection signal from the impact sensor 14 within t ₂ seconds, further within t ₃ seconds (here, t ₃ = 30). It is determined whether or not there has been a detection signal from the inclination sensor 16 at step S26.

When there is a detection signal from the inclination sensor 16 within t ₃ seconds, it is first determined that an abnormality has occurred, and an alarm signal is output from the control unit 20 (step S14). Warning alarm 2
2 issues a predetermined alarm (step S16). Even in such a case, it is possible to accurately detect a criminal act of a person, issue an alarm correctly, and repel a criminal.

By the way, when the vehicle 18 was equipped with a security alarm device provided with a control unit 20 for performing signal processing with the contents shown in FIG. 7 and an experiment was conducted, the human body detection sensor 10 reacts only when approaching the vehicle 18. Does not alert. However, when he hit the window glass within 10 seconds, an immediate alarm was issued. This prevents false alarms and allows the vehicle 18
We were able to confirm that a warning could be issued when criminal offenses were committed.

On the other hand, when a vehicle 18 was equipped with a security alarm device provided with a control unit 20 for performing signal processing in the pattern shown in FIG. 8, an alarm was not issued if the human body merely approached the vehicle 18. No alarm was issued if the window glass was hit within 10 seconds. When the vehicle 18 was tilted within 30 seconds thereafter, an alarm was issued for the first time, and no alarm was issued under other conditions.

The above is an example in which a plurality of types of sensors are provided as sensors for abnormality detection, and an alarm is issued based on a detection signal from the sensors. However, in the present invention, only one sensor is provided. It is also possible to equip only one type of sensor and determine that an abnormality has occurred when a detection signal from the sensor is repeatedly and intermittently output within a predetermined time, and issue an alarm. .

For example, the control unit 20 is provided with a counter for counting the number of times of signal detection by the sensor. When a detection signal from the sensor is input, no alarm is issued at the first signal input, and the signal is output within a set time. When a second signal is input, an alarm can be issued as an abnormal occurrence for the first time. Or 1
At the second signal input, a light warning sound is issued to intimidate, and then when the second signal input occurs within the set time, the original loud alarm sound may be emitted for the first time. it can.

Further, as another pattern, when the magnitude of the detection signal exceeds a predetermined threshold value within a predetermined time after a signal from the sensor is input to the control unit 20, only a small alarm sound is generated. , And thereafter, if there is a signal input from the sensor again within a set time and the signal continues for a certain period of time and again exceeds the predetermined threshold value in the meantime, the first time there is It is also possible to give a big warning. Also in these cases, the influence of the disturbance element can be removed as compared with the conventional security alarm device, and the original function of the security alarm device can be achieved.

The embodiment of the present invention has been described in detail above, but this is merely an example. For example, in the present invention, sensors of the same type are provided at a plurality of locations of the automobile 18, and an alarm sound is generated when signal inputs from the plurality of sensors work simultaneously or with a time difference within a predetermined time. It is also possible.

Further, the human body detecting sensor 10 and the sound sensor 12
And an impact sensor 14 or an inclination sensor 16,
The human body detection sensor 10 is used as a first sensor, the sound sensor 12 is used as a second sensor, the impact sensor 14 or the inclination sensor 16 is used as a third sensor, and the first sensor, the second sensor, and the third sensor are used. When the sensor detects an abnormality with a time lag, it is possible to determine that an abnormality has occurred for the first time and issue an alarm, and furthermore, the above embodiments are appropriately combined to constitute a security alarm device of the present invention. For example, the present invention can be configured in variously modified forms without departing from the gist of the present invention.

[Brief description of the drawings]

FIG. 1 is a diagram showing an automobile equipped with a security alarm device according to one embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a security alarm device in the embodiment.

FIG. 3 is a flowchart showing control contents in a control unit of FIG. 2;

FIG. 4 is a flowchart showing control contents different from those in FIG. 3;

FIG. 5 is a comparative example diagram showing, as a flowchart, control contents different from those in FIGS. 3 and 4;

FIG. 6 is a block diagram showing a configuration of a security alarm device according to another embodiment of the present invention.

FIG. 7 is a flowchart showing control contents of a control unit in FIG. 6;

FIG. 8 is a flowchart showing control contents different from those in FIG. 7;

[Explanation of symbols]

 Reference Signs List 10 human body detection sensor 12 sound sensor 14 impact sensor 16 inclination sensor 18 automobile 20 control unit 22 alarm issuing unit

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[Procedure amendment]

[Submission date] May 28, 1999 (1999.5.2
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Vehicle security alarm

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle security alarm system which issues an alarm when an abnormality occurs in a vehicle such as an automobile and prevents crime.

[0002]

2. Description of the Related Art
2. Description of the Related Art There is known a vehicle security alarm device in which when a vehicle such as a vehicle (hereinafter, a vehicle is described as a representative) has an abnormality, the abnormality is detected by a sensor and a warning sound is issued. Such a conventional vehicle security alarm generally includes only a single sensor (for example, an impact sensor or a sound sensor) as an abnormality detection sensor. When the sensor detects an abnormality, for example, the impact sensor detects an impact. When the sound is detected or when the sound sensor detects the sound, an alarm sound is automatically and immediately generated, which causes the following inconvenience.

For example, the sensor reacts to the impact or shaking due to strong wind or heavy rain, or to the explosion of an aircraft, traffic of a large vehicle such as a truck, backfire noise, traffic of people, etc. For example, the sensor outputs an abnormality occurrence signal due to disturbance elements other than the original human criminal act such as a criminal act, thereby causing an alarm sound.

[0004] This alarm sound is intended to inform the surroundings that a criminal act such as theft has occurred, and is a loud sound. Therefore, a loud alarm sound is emitted despite no criminal act. If it occurs and keeps ringing, it will cause great trouble to the surrounding area.

[0005] Because of these problems, there has been a hesitation in using such a vehicle security alarm.
The fact is that it is not fully utilized, although it is known to be effective for crime prevention.

[0006]

The vehicle security alarm of the present invention has been devised to solve such a problem. According to the first aspect of the present invention, there is provided a vehicle security alarm device mounted on a vehicle such as an automobile for performing crime prevention, wherein the first sensor detects a human body approaching the vehicle.
Detects human body detection sensors and sounds generated from vehicles
The sound sensor as the second sensor, and from those sensors
A control unit that outputs a warning signal in response to the detection signal of
Alarm issuing unit that issues an alarm based on an alarm signal from the control unit
And the control unit includes the human body detection sensor
After the detection signal from the
A true error has occurred when a detection signal is received from the sensor
And outputs an alarm signal to the alarm issuing unit.
Information is generated .

[0007] What according to claim 2, a vehicle security alarm device for for performing security is equipped in an automobile or the like vehicle, riding
Person as the first sensor to detect a human body approaching an object
A body detection sensor and a shock applied to the vehicle;
Impact sensor as a second sensor for detecting the inclination of
Tilt sensors and alarms received from detection signals from those sensors
A control unit for outputting an alarm signal, and an alarm signal from the control unit.
An alarm issuance unit that issues an alarm based on the
The control unit receives a detection signal from the human body detection sensor.
After the first set time, the impact sensor or the inclination sensor
That a true error occurred when there was a detection signal from
Judgment and outputs an alarm signal to the alarm issuance section, and issues an alarm
It is characterized by being produced .

[0008] What the third aspect, a vehicle security alarm device for for performing security is equipped in an automobile or the like vehicle, riding
Person as the first sensor to detect a human body approaching an object
Body detection sensor, second sensor for detecting impact applied to the vehicle
And a third sensor for detecting the inclination of the vehicle.
Sensors as sensors for the
A control unit for receiving a knowledge signal and outputting an alarm signal, and the control unit
And an alarm issuing unit that issues an alarm based on an alarm signal from
And the control unit is provided with a control signal from the human body detection sensor.
After the detection signal, within the first set time the impact sensor
And then within the second set time before
When a detection signal is received from the tilt sensor, a truly abnormal
It is determined that the alarm has occurred and an alarm signal is sent to the alarm issuing unit.
Output and generate an alarm .

[0009]

As described above, the security alarm device of the first aspect has a human body detection sensor as the first sensor and a second sensor.
Equipped with a sound sensor as a secondary sensor, and human body detection
After the detection signal from the sensor, the sound
When there is a detection signal from the sensor,
In the case of this security alarm system, it is determined whether the abnormality occurred due to a criminal act such as aiming at a vehicle or the like, that is, whether or not there is a criminal act. The determination can be performed with higher accuracy, and it is possible to prevent a loud alarm sound from being generated due to a malfunction.

[0010] For example it is possible that the same kind of the plurality of sensors and a sensor will simultaneously issues an abnormality detection signal when there is a disturbance element, security alarm system of claim 1
In the case of the above, such a fear is small, and different types of abnormalities that occur with a time lag associated with a criminal act of a person can be more accurately detected and determined.

More specifically, in general, when an article inside the automobile is stolen or mischief is performed on the vehicle body, such as aiming at a vehicle, first, a person approaches the vehicle and pryes open the doors or the like of the vehicle body to invade inside. Stealing indoor goods, etc. Therefore, claim 1
First, the approach of the human body is detected by the human body detection sensor, then the sound generated when the door of the vehicle body is opened is detected by the sound sensor, and when they are detected with a certain time difference, it is assumed that an abnormality has occurred. If the determination is made, the influence of the above-mentioned disturbance element can be eliminated, and the abnormality caused by human action can be accurately grasped.

According to a second aspect of the present invention, the human body detection sensor is used as a first sensor, while an impact sensor for detecting an impact applied to a vehicle or an inclination sensor for detecting an inclination of the vehicle is used as a second sensor. When the impact sensor or the inclination sensor detects an abnormality with a predetermined time difference after the abnormality is detected, a warning is issued assuming that an abnormality caused by human action has occurred. Abnormalities caused by actions can be detected more accurately, and an alarm can be issued.

According to a third aspect of the present invention, an abnormality occurs when there is an impact detection signal from the impact sensor after the abnormality detection signal from the human body detection sensor, and then there is an inclination detection signal from the inclination sensor. In such a case, an abnormality caused by a criminal act of a person can be accurately determined, and a warning can be correctly issued.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment in which the present invention is applied to a security alarm system for a vehicle will be specifically described with reference to the drawings. In FIG. 1, reference numeral 10 denotes a human body detection sensor, 12 denotes a sound sensor for detecting a contact sound to the automobile 18, 14 denotes an impact sensor for detecting an impact applied to the automobile 18, and 16 denotes an inclination for detecting the inclination of the automobile 18. It is a sensor. These sensors 10, 12, 14, and 16 can be mounted on the automobile 18 at appropriate positions.

Here, the human body detection sensor 10 includes an ultrasonic sensor, a radio wave sensor, an infrared sensor, a far infrared sensor,
A laser sensor, an optical sensor, or the like can be used.

Various types of sound sensor 12 can also be used. In particular, by providing a microphone and a high-pass filter, a low-pass filter, a band-pass filter, and the like, it is possible to detect only a sound of a specific frequency.

In particular, when a mischief such as coin damage or an aim on the car is performed on the automobile 18, a relatively high frequency sound such as a metal sound is likely to be generated.
It is advantageous to use a pitch sensor 12 that selectively picks up high frequency sounds. In addition, various types of sensors can be used as the impact sensor 14 and the inclination sensor 16.

FIG. 2 shows an example of the configuration of a security alarm device according to the present embodiment. In FIG. 2, reference numeral 20 denotes signal processing upon receiving detection signals from the human body detection sensor 10 and the sound sensor 12;
The control unit determines that an abnormality has occurred when a predetermined condition is satisfied, and outputs an alarm signal to the alarm issuing unit 22. The alarm issuing unit 22 issues an alarm sound upon receiving the alarm signal. Here, the alarm issuing unit 22 can issue various alarm sounds such as a buzzer, a bell, a siren, and a horn.

The control unit 20 may perform signal processing by a logic circuit, or may perform signal processing by using a microcomputer and operating it according to a predetermined program. This is the same in the following embodiments.

FIG. 3 is a flowchart showing the control contents of the control unit 20 in this embodiment, that is, the signal processing contents. As shown in the figure, in this example, after the human body detection sensor 10 detects the approach of the human body to the car 18, an alarm is issued when the sound sensor 12 detects an abnormal sound within a predetermined time. .

Specifically, in step S10, the human body
The detection sensor 10 detects the approach of a human body and outputs a signal.
And a predetermined time t in step S12.₁Seconds (here
t₁= 5) There is no detection signal from the pitch sensor 12 within
Is determined, and t ₁Pitch sensor 1 within seconds
When the control unit 20 receives a detection signal from the
Is output (step S14). And this alarm signal
In response to this, an alarm is issued in the alarm issuing section 22 (step
Step S16).

As described above, two types of sensors, ie, a human body detection sensor 10 and a sound sensor 12 are provided as sensors for detecting abnormalities. First, after the human body detection sensor 10 detects an abnormality, the sound sensor is detected within a certain period of time. If an alarm is issued when the abnormal sound is detected, the vibration of the automobile 18 due to natural phenomena such as strong wind or heavy rain, the explosion of aircraft, the traffic of vehicles such as trucks, the backfire noise, the traffic of people, etc. Eliminate the influence of disturbance elements as much as possible, detect only criminal acts by human beings, avoid malfunctions and false alarms by disturbance elements as much as possible, detect original crimes, and issue alarms accordingly. It can be carried out. Therefore, it is possible to avoid a situation in which a loud alarm sound is issued due to a malfunction as in a conventional security alarm device, and the surrounding area is inconvenienced.

By the way, as shown in FIG. 4, when a detection signal is received from either the human body detection sensor 10 or the sound sensor 12 (step S100), an alarm is issued immediately (step S102). When an experiment was conducted with the alarm device mounted on the automobile 18, the automobile 18
Detects the movement of people passing around the area and issues alarms frequently, or detects the brake noise (including high-frequency sounds) of bicycles passing around and issues alarms frequently. As a result, erroneous alarms frequently occurred in addition to the original theft prevention. However, an experiment was carried out by installing a security alarm device according to the embodiment of the present invention in which signal processing was performed according to the processing contents shown in FIG. Was performed, the erroneous alarm was not issued because the probability of the sound sensor 12 reacting within 5 seconds was very low, although the movement of a person moving around was detected.

When the user approached the car and scratched the door panel of the car 18 to reproduce the mischief of the car 18, no alarm was issued just by approaching the car. An alarm has been triggered. This proved that the security alarm was working effectively.

FIG. 5 shows another embodiment in which a human body detection sensor 10, an impact sensor 14,
An alarm is issued from the alarm issuance section 22 after three types of sensors, that is, the inclination sensor 16, are subjected to signal processing of detection signals from the sensors in advance.

FIG. 6 shows an example of the content of the signal processing by the control unit 20. As shown in FIG. 6 , after the human body detection sensor 10 detects a human body (step S10), t ₂ When there is a detection signal from the impact sensor 14 or the inclination sensor 16 within the second (here, t ₂ = 10) (step S22), the control unit 2 does not operate for the first time.
It is determined that 0 has occurred and an alarm signal is output (step S14), and the alarm issuance unit 22 that has received the alarm signal issues an alarm (step S16).

In general, when a person commits criminal acts against the car 18 such as aiming at the car, the person first approaches the car 18 and then opens the door or trunk of the car 18 to steal articles inside the car or mischief. Is done. Therefore, when a specific action is performed on the vehicle 18 in such an action pattern, the approach of a person can be detected by the human body detection sensor 10 and the subsequent opening of the door or trunk of the vehicle 18 can be detected. For actions,
This can be detected by the impact sensor 14 or the inclination sensor 16 which detects the impact or inclination of the automobile 18.

Therefore, when the detection signal from each sensor is preliminarily processed according to the processing contents shown in FIG. 6 and then an abnormality is determined and an alarm is output, the disturbance element is satisfactorily eliminated. Then, it is possible to accurately detect a criminal act, a mischief, or the like due to a human act, and issue an alarm.

FIG. 7 shows a case where a signal is processed in a different pattern from that shown in FIG. 6 when an alarm is issued based on detection signals from the three types of sensors, ie, the human body detection sensor 10, the impact sensor 14, and the inclination sensor 16. shows the example, after an detection signal from the human body detection sensor 10 in this example, as shown in FIG. (step S10), and first after that t ₂ seconds in step S24 (t ₂ here
= 10) within whether or not there is a detection signal caused by the impact sensor 14 is determined to, and the shock sensor 14 within t ₂ seconds
When there is a detection signal from is determined whether or not further or subsequent t ₃ seconds (here t _{3 =} 30) had a detection signal by the tilt sensor 16 within (step S2
6).

[0030] And when a detection signal by the tilt sensor 16 within t ₃ seconds, where the first abnormality is the warning signal from the controller 20 is outputted is judged as occurring (step S14), and then subjected to this Warning alarm 2
2 issues a predetermined alarm (step S16). Even in such a case, it is possible to accurately detect a criminal act of a person, issue an alarm correctly, and repel a criminal.

Incidentally, when an experiment was carried out with the security alarm device provided with the control unit 20 for performing signal processing as shown in FIG. 6 mounted on the automobile 18, the human body detection sensor 10 reacts only when approaching the automobile 18. Does not alert. However, when he hit the window glass within 10 seconds, an immediate alarm was issued. This prevents false alarms and allows the vehicle 18
We were able to confirm that a warning could be issued when criminal offenses were committed.

On the other hand, when an experiment was carried out by installing a security alarm device equipped with a control unit 20 for performing signal processing in the pattern shown in FIG. 7 on the automobile 18, an alarm was not issued only when the human body approached the automobile 18. No alarm was issued if the window glass was hit within 10 seconds. When the vehicle 18 was tilted within 30 seconds thereafter, an alarm was issued for the first time, and no alarm was issued under other conditions.

The embodiment of the present invention has been described in detail above, but this is merely an example. For example, in the present invention, a human body detection sensor 10, a sound sensor 12, a shock sensor 14, or an inclination sensor 16 are provided, and the human body detection sensor 10
As the first sensor, the sound sensor 12 as the second sensor, the impact sensor 14 or the inclination sensor 16 as the third sensor, and the first sensor, the second sensor, and the third sensor are abnormal with a time difference. When it is detected,
Therefore, it is also possible to determine that an abnormality has occurred for the first time and issue an alarm, and it is also possible to configure the security alarm device of the present invention by appropriately combining the above embodiments. The present invention can be configured in variously modified forms without departing from the spirit thereof.

[Brief description of the drawings]

FIG. 1 is a diagram showing an automobile equipped with a security alarm device according to one embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a security alarm device in the embodiment.

FIG. 3 is a flowchart showing control contents in a control unit of FIG. 2;

FIG. 4 is a comparative example diagram showing a control content different from that of FIG . 3 as a flowchart.

FIG. 5 is a block diagram showing a configuration of a security alarm device according to another embodiment of the present invention.

FIG. 6 is a flowchart showing control contents of a control unit in FIG. 5 ;

FIG. 7 is a flowchart showing control contents different from those in FIG. 6 ;

[Description of Signs] 10 Human body detection sensor 12 Sound sensor 14 Impact sensor 16 Tilt sensor 18 Automobile 20 Control unit 22 Alarm issuing unit

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

FIG. 4

FIG. 5

FIG. 6

FIG. 7

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI theme coat ゛ (reference) G08B 15/00 G08B 15/00 21/00 21/00 UF term (reference) 5C084 AA04 BB04 DD03 DD07 DD31 DD36 DD41 DD73 DD81 DD83 DD89 EE06 GG31 GG38 GG43 GG44 GG57 GG65 HH03 HH05 5C086 AA28 BA22 CA06 CA10 CA12 CA22 CA24 CB16 CB26 CB28 DA01 DA02 DA16 DA18 DA26 EA11 EA23 EA32 EA33 EA34 EA45 FA02 GA04

Claims (9)

[Claims] 1. A vehicle security alarm device mounted on a vehicle such as an automobile for performing security, comprising: a plurality of sensors including first and second sensors for detecting abnormality; and detection signals from the sensors. A control unit that performs signal processing in advance before receiving and issuing an alarm, and outputs an alarm signal when receiving a detection signal from at least the first and second two or more sensors; and And an alarm issuing unit for issuing an alarm based on the alarm signal of (1). 2. The vehicle security alarm according to claim 1, wherein the first sensor and the second sensor are different types of sensors. 3. The sensor according to claim 2, wherein:
The sensor further includes a third sensor of a different type from the first and second sensors, and when the control unit receives detection signals from the three types of sensors, the control unit issues an alarm signal to the alarm issuing unit. And outputting a warning, and issuing a warning. 4. The control unit according to claim 1, wherein a detection signal from the second sensor is received within a first set time after a detection signal from the first sensor is received. And a warning signal is output to the warning issuing section to generate a warning, and a vehicle security alarm is provided. 5. The method according to claim 3, wherein after the detection signal from the first sensor is received, the detection signal from the second sensor is provided within the first set time, and the detection signal is further provided within the second set time. When there is a detection signal from the third sensor, the control unit determines that a true abnormality has occurred, outputs an alarm signal to the alarm issuing unit, and issues an alarm. Vehicle security alarm device. 6. The sensor according to claim 4, further comprising a human body detection sensor that detects a human body as the sensor, and a sound sensor that detects sound, wherein the human body sensor is used as a first sensor, and the sound sensor is used as a sensor. A vehicle security alarm device, which is used as a second sensor, and issues an alarm when a detection signal from the sound sensor is received after a detection signal from the human body detection sensor. 7. The human body detection sensor according to claim 4, further comprising a human body detection sensor for detecting a human body, an impact sensor for detecting an impact applied to a vehicle, or an inclination sensor for detecting an inclination of the vehicle as the sensor. Is used as the first sensor, the impact sensor or the inclination sensor is used as the second sensor, and an alarm is issued when a detection signal from the impact sensor or the inclination sensor is received after a detection signal from the human body detection sensor. A security alarm for vehicles, characterized in that the alarm is issued. 8. The human body detection device according to claim 5, further comprising a human body detection sensor for detecting a human body, an impact sensor for detecting an impact applied to a vehicle, and an inclination sensor for detecting an inclination of the vehicle as the sensors. A sensor is used as the first sensor, the impact sensor is used as a second sensor, and the tilt sensor is used as a third sensor. After the detection signal from the human body detection sensor, the signal from the impact sensor is used. A vehicle security alarm device that issues the alarm when a detection signal is received from the inclination sensor thereafter. 9. A vehicle security alarm device mounted on a vehicle such as an automobile for performing security, comprising: a sensor for detecting an abnormality; a detection signal from the sensor and a signal before the alarm is issued. A control unit that outputs an alarm signal after performing the processing, and an alarm issuance unit that issues an alarm based on the alarm signal from the control unit, and the control unit sets a detection signal from the same sensor Vehicles characterized in that when two or more repetitions occur intermittently within the time, it is determined that a true abnormality has occurred and an alarm signal is output, and the alarm issuance unit issues an alarm. Security alarm device.