CN105118200B - Anti-intrusion alarm and anti-intrusion method that balcony or window are entered the room are crossed in strick precaution - Google Patents

Abstract

It is used to take precautions against the anti-intrusion alarm and anti-intrusion method crossed balcony or window and entered the room the invention discloses a kind of, including：First sensing unit, for sensing personnel's moving direction；Second sensing unit, for sensing to a certain range of indoor occupant active situation of the first sensing units sense area inside；Controller, judges invasion shape according to the perception situation of the first sensing unit and the second sensing unit；The present invention can distinguish the normal activity of invasion and indoor occupant, it is not necessary to withdraw a garrison and deploy troops on garrison duty, rate of false alarm is low.

Description

Anti-intrusion alarm and anti-intrusion method for preventing entry from over balcony or window

technical field

The invention relates to the field of anti-theft alarms, in particular to an anti-intrusion alarm used to prevent entry into a room by climbing over a balcony or a window.

Background technique

There are many anti-intrusion devices on the market today, which are based on infrared detection technology. The beam detector and curtain detector based on infrared detection technology are the most widely used front-end detection devices of the anti-intrusion system. The principle of the through-beam detector is: the light emitter emits pulsed infrared rays, which are received by the light receiver after being focused by the optical mirror. When the infrared pulse beam is blocked or the light receiver cannot receive infrared rays, the alarm host will control the alarm. The principle of the curtain detector is: the infrared ray emitted by the human body is refracted by the curtain Fresnel lens group, and when it is received by the pyroelectric sensor element, the alarm host controls the alarm.

Thieves often use windows or balconies to burglary. When installing through-beam detectors and curtain detectors on balconies or windows, due to the frequent opening and closing of windows, through-beam detectors and curtain detectors cannot distinguish indoor Alarms triggered by personnel during normal activities require frequent arming and disarming of the system using remote controls or keyboards. If you forget to disarm when the system is armed, it may trigger a large number of false alarms; if you forget to arm the system when it is disarmed, it may be illegally sneaked into or broken into by illegal personnel, which greatly reduces the practicality and popularity.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides an anti-intrusion alarm and an anti-intrusion method for preventing entry by climbing over a balcony or a window, which can distinguish between intrusion and normal activities of indoor personnel, does not require disarming and arming, and has a low false alarm rate.

The technical solution adopted by the present invention to solve the above problems is:

An anti-intrusion alarm for preventing entry over a balcony or window, comprising:

The first sensing unit is used to sense the moving direction of the person;

The second sensing unit is used to sense the indoor personnel activities inside the sensing area of the first sensing unit;

The controller judges the intrusion status according to the sensing conditions of the first sensing unit and the second sensing unit;

The alarm circuit works when the controller determines that it is an intrusion.

The sensing area of the second sensing unit is the protected area, that is, the area inside the balcony or the window, and the sensing area of the first sensing unit is the part outside the second sensing unit, directly in contact with the non-protected area. When a thief climbs over the balcony or window and enters the room, the first sensing unit senses that he is moving from the non-protected area to the protected area, and the controller judges that it is an illegal intrusion, and the controller controls the alarm circuit to realize the intrusion alarm. When the indoor personnel are in normal activities, the movement direction of the personnel is from the protected area to the non-protected area or when they stay in the buffer zone, they are first sensed by the second sensing unit, and the controller judges that it is based on the information of the second sensing unit. During the normal activities of the personnel, the controller temporarily disconnects the alarm circuit. At this time, no matter whether the personnel continue to open the window or do other actions and are sensed by the first sensing unit, the alarm circuit will not alarm until the personnel walk out of the second sensing unit. Sensing area, that is to restore the normal operation of the alarm circuit. The anti-intrusion alarm device of the present invention can effectively distinguish between intrusion behavior and normal activities of indoor personnel, and avoid false alarms triggered by normal activities of indoor personnel; and the false alarm rate is low, and there is no need to disarm and arm to achieve 24 Hour arming, easy to popularize and use.

Preferably, the alarm circuit includes a local alarm unit and/or a signal transmission device. The signal transmission device of the alarm circuit realizes remote alarm, realizes connection with household handheld terminals, property supervision system, public security system and other equipment, realizes various remote monitoring and improves safety.

Further, the second sensing unit is a wide-angle sensing unit. The wide-angle sensing unit is used to sense the activities of people in a certain area in the first sensing unit. The monitoring angle is large. It takes a certain time for people to trigger the second sensing unit until the first sensing unit is triggered, which can increase the judgment of the controller. Time, disconnect the alarm circuit in time to reduce misjudgment.

Further, in order to reduce false positives under special circumstances, the sensing angle of the second sensing unit is 14°-20°. The second sensing unit is used to sense the activities of people in the room. However, if it is installed on the windows/balconies of bedrooms, living rooms, etc., if the monitoring angle is too large, when people are sleeping, they will also detect people in the room, and the alarm circuit will always be activated. In the non-working state, it is very easy to produce false positives, especially at night.

Further, the first sensing unit is a curtain-type sensing unit. The curtain-type sensing unit has a small sensing area, is not easily affected by other factors, and has high judgment accuracy.

Further, the first sensing unit is a direction curtain detector.

A method for preventing entry from overturning a balcony or a window, in which a first sensing unit is used to sense the moving direction of a person,

The second sensing unit senses the movement of people inside the sensing area of the first sensing unit,

The controller judges the intrusion status according to the sensing situation of the first sensing unit and the second sensing unit, wherein the judgment standard of the intrusion is:

If the first sensing unit is first triggered and the person is detected to move through the sensing area of the first sensing unit to the sensing area of the second sensing unit, it is determined to be an intrusion;

If the second sensing unit is triggered first, and the first sensing unit is triggered within a certain period of time, or when a person is always in the sensing area of the second sensing unit, the first sensing unit is triggered, and the controller determines that it is non-intrusion;

After judging as an intrusion, the controller controls the alarm circuit or/and the information transmission circuit to work;

After judging that it is non-intrusion, the controller will temporarily disconnect the alarm circuit or/and the information transmission circuit until the second sensing unit detects no movement of personnel and restores the alarm circuit or/and the information transmission circuit to work.

Further on the basis of the above method, the first sensing unit is a curtain-type sensing unit.

Further on the basis of the above method, the second sensing unit is a wide-angle sensing unit.

On the basis of the above method, further in order to reduce the false alarm rate of the alarm system, the sensing angle of the second sensing unit is 14°-20°.

In sum, the beneficial effects of the present invention are:

The device and method can effectively distinguish between intrusion behavior and normal activities of indoor personnel, and avoid false alarms triggered by normal activities of indoor personnel; and the false alarm rate is low, and disarming and arming are not required to achieve 24-hour arming, which is easy to popularize and use .

Description of drawings

Fig. 1 is a structural block diagram of the present invention.

Fig. 2 is a top view of the distribution of sensing areas of the first sensing unit and the second sensing unit of the present invention.

Fig. 3 is a side view of the distribution of sensing areas of the first sensing unit and the second sensing unit of the present invention.

Wherein, the labels in the figure are: 1. the sensing area of the first sensing unit; 2. the sensing area of the second sensing unit; 3. the balcony boundary or window area.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments and accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1:

As shown in Figure 1, an anti-intrusion alarm for preventing entry by climbing over a balcony or a window includes: a first sensing unit for sensing the direction of movement of people; The second sensing unit for sensing the situation; the controller for judging the intrusion status according to the sensing situation of the first sensing unit and the second sensing unit; and an alarm circuit that works when the controller determines that it is intrusion.

In the present invention, the sensing area of the first sensing unit is the monitoring area, and the sensing area of the second sensing unit is the buffer zone, so as to realize the judgment of the normal activities of the indoor personnel and reduce the false alarm rate of the alarm.

The first sensing unit and the second sensing unit of the present invention can use technologies such as infrared, microwave, laser, video detection, smoke sensing, temperature sensing, light sensing, wind sensing, air quality detection, or a combination of multiple detection technologies. When a thief climbs over the balcony or window and enters the room, the first sensing unit senses that he is moving from the non-protected area to the protected area, and the controller judges that it is an illegal intrusion, and the controller controls the alarm circuit to realize the intrusion alarm. When the people in the room are in normal activities, the movement direction of the people is from the protected area to the non-protected area or when they stay in the buffer zone, they are first sensed by the second sensing unit, and the controller judges the behavior according to the information of the second sensing unit For the normal activities of personnel, the controller temporarily disconnects the alarm circuit. At this time, no matter whether the personnel continue to open the window or do other actions and are sensed by the first sensing unit, the alarm circuit will not alarm until the personnel walk out of the second sensing unit The sensing area, that is to restore the normal operation of the alarm circuit. With the device of the present invention, it can effectively distinguish between intrusion behavior and normal activities of indoor personnel, avoid false alarms triggered by normal activities of indoor personnel, do not need disarming and arming, so as to realize 24-hour arming, and is easy to popularize and use.

Example 2:

As shown in FIG. 1 , this embodiment is optimized on the basis of the above embodiments, that is, the alarm circuit includes a local alarm unit and/or a signal transmission device. The local alarm unit can use sound alarm, light alarm, sound and light alarm or other alarm equipment to realize local alarm. The signal transmission device realizes the remote transmission of the alarm signal, realizes the connection with the residents' handheld terminal, property supervision system, public security system and other equipment, so that the emergency systems of the residents can take timely anti-theft measures after being invaded.

Example 3:

As shown in FIG. 1 , this embodiment is optimized on the basis of the above embodiments, that is, when sensing people, the infrared technology is specifically used. The first sensing unit adopts a curtain type sensing unit, and its sensing area 1 is a curtain type; the second sensing unit adopts a wide-angle sensing unit, and its sensing area 2 is a monitoring area with a certain angle and forms a certain angle with the first sensing unit , to form a buffer. As shown in Figures 2 and 3, the distribution diagrams of the sensing areas of the first sensing unit and the second sensing unit, the first sensing unit detects the moving direction of the person, and the direction curtain detector is preferred, and its sensing area is small. It can reduce misjudgment and avoid interference from outdoor objects. The direction curtain detector is based on the infrared principle, combined with the infrared sensing element and the corresponding curtain Fresnel lens, it can sense the personnel and identify the direction of the personnel passing through the "curtain", and its structure is simple. In the prior art, two sensors are used to identify the moving direction of the person through the order in which the two sensors perceive the person successively. It not only has a wide sensing area, but is also easily interfered by people or objects in other areas, and has a complex structure. The process is complicated, and misjudgment is prone to occur; the directional curtain detector not only has a simple structure, but also has high discrimination accuracy, which is beneficial to reduce the misjudgment rate of the device.

In general, the anti-intrusion alarm of the present invention is installed on the wall above the window or at the boundary of the balcony. After installation, the sensing area of the first sensing unit is perpendicular to the ground, forming an invisible protective curtain to the window or balcony 3, and the detection area of the second sensing unit forms an included angle with the protective curtain, at a certain distance from the protective curtain to the room. A buffer zone is formed within the range. The first sensing unit is only triggered when a person climbs over a balcony or a window, and the false positive rate is low.

Example 4:

As shown in FIG. 1 to FIG. 3 , this embodiment discloses a specific implementation manner based on the above embodiments, that is, preferably, the sensing angle of the second sensing unit is selected between 14°-20°. Preferably, the second sensing unit still uses infrared technology, which can be composed of an infrared sensing unit and a corresponding wide-angle Fresnel lens, and the angle of the wide-angle Fresnel lens is set at 14°-20°, and is installed on the wall above the window or When it is at the boundary of the balcony, it sets the space with a horizontal distance of about 1 meter inside the first sensing unit as a buffer zone, avoiding setting rest areas such as sofas and beds in the sensing area of the second sensing unit, and preventing people False reporting phenomenon, to avoid the underreporting situation. The sensing angle of the second sensing unit is determined according to the height of the floor and the layout in the room.

Example 5:

A method for preventing entry from overturning a balcony or a window, in which a first sensing unit is used to sense the moving direction of a person,

The second sensing unit senses the movement of people inside the sensing area of the first sensing unit,

The controller judges the intrusion status according to the sensing situation of the first sensing unit and the second sensing unit, wherein the judgment standard of the intrusion is:

If the first sensing unit is first triggered and the person is detected to move through the sensing area of the first sensing unit to the sensing area of the second sensing unit, it is determined to be an intrusion;

If the second sensing unit is triggered first, and the first sensing unit is triggered within a certain period of time, or when a person is always in the sensing area of the second sensing unit, the first sensing unit is triggered, and the controller determines that it is non-intrusion;

After judging as an intrusion, the controller controls the alarm circuit or/and the information transmission circuit to work;

After judging that it is non-intrusion, the controller will temporarily disconnect the alarm circuit or/and the information transmission circuit until the second sensing unit detects no movement of personnel and restores the alarm circuit or/and the information transmission circuit to work.

With this method, the second sensing unit is used to monitor the activities of personnel, and to control the working conditions of the alarm circuit and/or the information transmission circuit, so as to avoid false alarms triggered by normal activities of personnel.

The first sensing unit is a curtain-type sensing unit.

In order to avoid false alarms and missed alarms due to normal activities of indoor personnel, it is necessary to set the buffer zone reasonably. The second sensing unit adopts a wide-angle sensing unit and sets the sensing angle between 14-20°. A space with a horizontal distance of about 1 meter inside the sensing area of the first sensing unit is set as a buffer zone.

As described above, the present invention can be preferably carried out.

Claims (7)

1. An anti-intrusion alarm for guarding against escaping from a balcony or a window is characterized in that it is installed on the wall above the window or at the boundary of the balcony, including: The first sensing unit is used to sense the moving direction of the personnel, and its sensing area is a protective curtain perpendicular to the ground; The second sensing unit is used to sense the indoor personnel activities inside the sensing area of the first sensing unit. The sensing area is the side of the protective curtain close to the room, and the sensing area of the second sensing unit forms a clip with the protective curtain. angle so that a buffer zone is formed between the inner side of the protective curtain and the sensing area of the second sensing unit; The controller judges the intrusion status according to the sensing conditions of the first sensing unit and the second sensing unit; Alarm circuit, when the controller determines that it is an intrusion, it will work; The second sensing unit is a wide-angle sensing unit; the sensing angle of the second sensing unit is 14°-20°. 2 . The anti-intrusion alarm for preventing entry by climbing over a balcony or a window according to claim 1 , wherein the alarm circuit includes a local alarm unit and/or a signal transmission device. 3 . 3. An anti-intrusion alarm for preventing entry from overturning a balcony or a window according to claim 1 or 2, wherein the first sensing unit is a curtain-type sensing unit. 4. An anti-intrusion alarm for preventing entry from overturning a balcony or a window according to claim 3, wherein the first sensing unit is a direction curtain detector. 5. A method for preventing entry from overturning a balcony or a window, characterized in that, The first sensing unit senses the moving direction of the personnel, and the sensing area of the first sensing unit is a protective curtain perpendicular to the ground; The second sensing unit senses the movement of people inside the sensing area of the first sensing unit. The sensing area of the second sensing unit is the protective curtain near the indoor side and forms an angle with the protective curtain so that the second sensing A buffer area is formed between the sensing area of the unit and the protective curtain; The controller judges the intrusion status according to the sensing situation of the first sensing unit and the second sensing unit, wherein the judgment standard of the intrusion is: If the first sensing unit is first triggered and the person is detected to move through the sensing area of the first sensing unit to the sensing area of the second sensing unit, it is determined to be an intrusion; If the second sensing unit is first triggered and the first sensing unit is triggered within a certain period of time, or when a person is always in the sensing area of the second sensing unit, the first sensing unit is triggered, and the controller determines that it is non-intrusion; After judging as an intrusion, the controller controls the alarm circuit or/and the information transmission circuit to work; The second sensing unit is triggered before the first sensing unit, and the controller will temporarily disconnect the alarm circuit or/and information transmission circuit until the second sensing unit detects no movement of personnel and restores the alarm circuit or/and information transmission circuit to work ; The sensing angle of the second sensing unit is 14°-20°. 6. A method for preventing entry from overturning a balcony or a window according to claim 5, characterized in that: said first sensing unit is a curtain-type sensing unit. 7. A method for preventing entry from overturning over a balcony or window according to claim 5, characterized in that: said second sensing unit is a wide-angle sensing unit.