SECURITY MONITORING SYSTEM AND CORRESPONDING ALARM TRIGGERING METHOD

• US 20160189501A1
• Filed: 08/05/2013
• Published: 06/30/2016
• Est. Priority Date: 12/17/2012
• Status: Abandoned Application

• Current Assignee: BOLY Media Holdings Company Limited
• Original Assignee: BOLY Media Holdings Company Limited
• Inventors: SHEN, Xia, HU, Xiaoping
• Application Number:
  US14/652,452
• Publication Number:
  US 20160189501A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06T 2207/30232 Surveillance
• CPC Class Codes: G06T 7/254 involving subtraction of images
• CPC Class Codes: G08B 13/19602 Image analysis to detect motion of the intruder, e.g. by frame subtraction
• CPC Class Codes: G08B 13/19695 Arrangements wherein non-video detectors start video recording or forwarding but do not generate an alarm themselves
• CPC Class Codes: G08B 29/183 Single detectors using dual technologies G08B13/1672, G08B13/2448, G08B13/2494 take precedence
• CPC Class Codes: H04N 7/18 Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

Provided are a security surveillance system and an alarm triggering method thereof. The method includes steps of: acquiring, by a first processor, a first signal indicating that an infrared sensor is triggered; controlling, according to the first signal, a first lens to capture a first image; acquiring a stored first background image; comparing the first image and the first background image to obtain a difference; and triggering a first alarm operation if the difference meets a preset condition. By using a manner in which infrared sensor detection and image difference detection function together, the probability of false alarm caused by high ambient temperature can be reduced.

Claims

1. An alarm triggering method for a security surveillance system, comprising:

acquiring, by a first processor, a first signal indicating that an infrared sensor is triggered;

controlling, according to the first signal, a first lens to capture a first image;

acquiring a stored first background image;

comparing the first image and the first background image to obtain a difference; and

trigger a first alarm operation if the difference meets a preset condition.

2. The method according to claim 1, wherein the first alarm operation triggered by the first processor comprises storing the first image, and/or transmitting the first image to a user through a communication network.

3. The method according to claim 1, wherein the first alarm operation triggered by the first processor comprises sending a second signal to a second processor, and the method further comprises:

acquiring, by the second processor, an infrared trigger signal generated when the infrared sensor is triggered, and sending, according to the infrared trigger signal, the first signal to the first processor; and

triggering, by the second processor, a second alarm operation according to the second signal.

4. The method according to claim 1, further comprising:

controlling, by the second processor according to the infrared trigger signal or according to the second signal, a second lens to capture a second image; and

the second alarm operation triggered by the second processor comprises storing the second image, and/or transmitting the second image to a user through a communication network.

5. The method according to claim 1, further comprising:

controlling, by the first processor, the first lens to capture at least one background image or acquiring at least one input background image, and storing the at least one background image and a corresponding capturing time;

the first background image being the one selected from the stored background image and having the capturing time the closest to a capturing time of the first image.

6. The method according to claim 5, further comprising:

controlling, by the first processor, the first lens to capture a background image according to a preset time interval so as to update the stored background image.

7. The method according to claim 1, wherein the comparing the first image and the first background image to obtain a difference comprises performing analysis comparison on luminance and content, and the preset condition comprises that the difference reaches a preset threshold.

8. The method according to claim 1, further comprising:

providing, by the first processor, a user interface to the user to display the stored background image, and/or performing a management operation on the stored background image according to an instruction input by the user, the management operation being one or more selected from the following;

import, export, addition, deletion, and modification.

9. The method according to claim 1, further comprising:

calculating, by the first processor, a center and/or an area of a target object according to the difference between the first image and the first background image, and controlling a parameter of the first lens according to a calculation result, the parameter being one or more selected from;

a focal length, a direction, and an angle.

10. A security surveillance system, comprising:

an infrared sensor, configured to detect infrared radiation in a surveillance area, and generate an infrared trigger signal when being triggered by the infrared radiation;

a first lens, configured to capture an image in the surveillance area;

a first storage, configured to store a first background image; and

a first processor, signal-connected to the infrared sensor, the first lens and the first storage, and configured to run a program to implement a method comprising the following steps;

acquiring the infrared trigger signal, controlling, according to the infrared trigger signal, the first lens to capture a first image, acquiring the stored first background image, comparing the first image and the first background image to obtain a difference, and triggering a first alarm operation if the difference meets a preset condition.

11. The system according to claim 10, wherein the first lens is a lens capable of sensing multiple spectrums, the multiple spectrums being one or any combination selected from the following:

visible light, infrared light, and ultraviolet light.

12. A security surveillance system, comprising:

an infrared sensor, configured to detect infrared radiation in a surveillance area, and generate an infrared trigger signal when being triggered by the infrared radiation;

a first lens, configured to capture an image in the surveillance area;

a first storage, configured to store a first background image;

a first processor, signal-connected to the first lens and the first storage;

a second processor, signal-connected to the infrared sensor and the first processor, and configured to run a program to implement a method comprising the following steps;

acquiring the infrared trigger signal, sending a first signal to the first processor according to the infrared trigger signal, and triggering a second alarm operation according to a second signal sent by the first processor; and

the first processor, configured to run a program to implement a method comprising the following steps;

acquiring the first signal, controlling, according to the first signal, the first lens to capture a first image, acquiring the stored first background image, comparing the first image and the first background image to obtain a difference, and sending the second signal to the second processor if the difference meets a preset condition.

13. The system according to claim 12, further comprising:

a second lens, configured to capture an image in the surveillance area;

a second storage, configured to store an image captured by the second lens; and

the second processor being further signal-connected to the second lens and the second storage, the second processor being further configured to run a program to implement a method comprising the following steps;

controlling, according to the infrared trigger signal or according to the second signal, the second lens to capture a second image; and

the second alarm operation comprising storing the second image, and/or transmitting the second image to a user through a communication network.

14. The system according to claim 13, wherein the first lens and/or second lens is a lens capable of sensing multiple spectrums, the multiple spectrums being one or any combination selected from the following:

visible light, infrared light, and ultraviolet light.