TW202326631A - Security system - Google Patents

Abstract

A security system includes a surveillance device that monitors a predetermined event and captures image in a monitor scene; and a controller that controls the surveillance device and transmits the captured images. When the predetermined event is detected and an object is detected on the captured images, the surveillance device adjusts image capture amount, image transmit amount or image resolution.

Description

security system

The invention relates to a security system, in particular to a monitoring device suitable for the security system.

Smart home network or home automation system can be used to connect various electronic systems in the home, such as lighting, temperature control, entertainment, security, alarm, etc., to improve the quality of life, increase Convenience for personal productivity, enhanced home security and enhanced entertainment.

Surveillance devices in the smart home network can be connected to a central monitor station (CMS) or end users via the Internet to form a security system. Surveillance devices in smart home networks can transmit captured images to security centers or end users for visual verification.

However, due to the large amount of image data, it will occupy a considerable transmission bandwidth, and increase the response time and power consumption. If the number of transmitted images is reduced, although the required transmission bandwidth, response time and power consumption can be reduced, it will affect the correctness of visual verification, thus increasing the probability of false alarms.

Therefore, it is urgent to propose a novel mechanism to improve the transmission bandwidth, response time and power consumption of the security system.

In view of the above, one of the objectives of the embodiments of the present invention is to provide a security system and method, which can effectively reduce the required transmission bandwidth, response time and power consumption by using edge computing technology.

According to an embodiment of the present invention, the security system includes a monitoring device and a controller. The monitoring device is used for monitoring preset events and capturing images of monitoring scenes. The controller is used for controlling the monitoring device and transmitting captured images. When a preset event is detected and the captured image contains an object, the monitoring device adjusts the number of captured images, the number of transmitted images or the resolution of images.

The first figure shows a block diagram of a security system 100 according to an embodiment of the present invention, which is applicable to a smart home network, but is not limited thereto.

In this embodiment, the security system 100 may include a surveillance device 11 for monitoring preset events and capturing images of surveillance scenes. In one embodiment, the predetermined event refers to the occurrence of motion of an object (such as a person or an animal). In another embodiment, the predetermined event refers to the occurrence of an object (such as smoke or flame).

The security system 100 may include a controller 12, such as a gateway, which controls the monitoring device 11, and transmits images captured by the monitoring device 11 to a security center (central monitor station) via a network 13 (such as the Internet). , CMS) 14 or end user 15 for visual verification. The communication between the controller 12 and the monitoring device 11 can be wireless, such as sub-gigahertz radio frequency (sub-GHz RF), ZigBee (ZigBee), Bluetooth Low Energy (Bluetooth Low Energy, BLE), Z-wave ( Z-Wave), low-power wireless network (Low Power Wi-Fi); wired methods such as RS-485 can also be used.

The monitoring device 11 of this embodiment may include a sensor (sensor) 111 . In this embodiment, the sensor 111 may include a passive sensor. In one example, the sensor 111 may include a passive infrared sensor (passive infrared sensor, PIR sensor), as a motion sensor (motion sensor), by receiving sensing objects (such as people or animals) emitted Infrared rays are used to determine whether an object has moved. In another example, the sensor 111 may include a fire sensor, such as a smoke sensor or a heat sensor, to determine whether there is a fire-related object (such as smoke or flame) occur.

The monitoring device 11 of this embodiment may include a camera 112 for capturing images of the monitoring scene and then sending them to the security center 14 or the end user 15 . The monitoring device 11 may include a memory 113 for temporarily storing images captured by the camera 112 .

According to one of the features of this embodiment, the monitoring device 11 may include an edge computing (edge computing) processor 114, which processes the image captured by the camera 112 to determine whether the image contains objects (such as people, animals, smoke or flames). ). In the computer field, edge computing (edge computing) refers to the operation of calculation (and data storage) close to the source of data (source of data), but away from the central processing device. Taking the security system 100 of this embodiment as an example, the edge computing processor 114 (and the memory 113 ) is close to the camera 112 (that is, the data source), but far away from the security center 14 or the end user 15 . Thereby, the required transmission bandwidth, response time and power consumption can be effectively reduced.

The second figure shows a flowchart of a security method 200 according to an embodiment of the present invention, which can be implemented in the security system 100 in the first figure. In step 21, the controller 12 (such as a gateway) determines whether the smart home network is currently in an away mode. If it is the away-from-home mode, it means that the user is not at home at present, then enter step 22, and the controller 12 initiates the sensor 111 . Then, in step 23, the sensor 111 determines whether a preset event is detected. In one embodiment, a passive infrared sensor (PIR) is used as the sensor 111 to detect whether an object (such as a person or an animal) moves. If the object is detected to move, it means that the default event is detected. In another embodiment, a fire sensor (such as a smoke sensor or a heat sensor) is used as the sensor 111 to detect whether an object (such as smoke or flame) occurs. If an object is detected, it means that a default event has been detected.

If a predetermined event is detected (step 23), the sensor 111 activates the camera 112 to capture an image (step 24). In addition, the monitoring device 11 can first notify the controller 12 when the sensor 111 detects a preset event, and the controller 12 notifies the security center 14 or the end user 15, and then the subsequent camera 112 obtains the captured image and sends it to the controller 12 , and then the controller 12 transmits the captured image to the security center 14 or the end user 15 for visual verification.

In step 25, the edge computing processor 114 receives the image captured by the camera 112 and performs edge computing (such as object detection) to determine whether an object (such as a person, animal, smoke or flame) is detected in the image (step 26). In addition, the images captured by the camera 112 can be temporarily stored in the memory 113 .

If no object is detected in the image (step 26), the process returns to step 24 until the number of captured images is reached (step 27). If an object is detected in the image (step 26), the monitoring device 11 adjusts the number of captured images, the number of transmitted images or the resolution of images (step 28). Then, in step 29, the controller 12 transmits the images to the security center 14 or the end user 15 via the network 13 (such as the Internet) according to the number or resolution of the images to be transmitted for visual verification.

In one embodiment, the controller 12 transmits all currently captured images to the security center 14 or the end user 15 according to the number of image transmissions. In another embodiment, the controller 12 only transmits images containing detected objects according to the number of transmitted images, so that the required transmission bandwidth, response time and power consumption can be further reduced.

In yet another embodiment, the controller 12 transmits the captured image to the security center 14 or the end user 15 according to the image resolution. In this embodiment, the controller 12 uses the first (high) resolution to transmit images containing detected objects, but uses the second (low) resolution to transmit images not containing detected objects, wherein the second resolution Lower than first resolution. For example, the first (high) resolution may use the Video Graphics Array (VGA) image standard, while the second (lower) resolution may use the Quarter Video Graphics Array (QVGA) ) image standard, the resolution of the latter is a quarter of that of the former, which can effectively reduce the required transmission bandwidth, response time and power consumption.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention; all other equivalent changes or modifications that do not deviate from the spirit disclosed by the invention should be included in the following within the scope of the patent application.

100:Security system 11: Monitoring device 111: sensor 112: camera 113: memory 114:Edge computing processor 12: Controller 13: Network 14:Security Center 15: End user 200: Preservation method 21: Whether it is away from home mode 22: Turn on the sensor 23:Whether an event is detected 24: Capture image 25: Edge Computing 26: Whether the object is detected 27: Whether the number of image captures has been reached 28: Adjust the number of image capture, image transmission number or image resolution 29: Send images according to the number of images to be sent or the image resolution

The first figure shows the block diagram of the security system of the embodiment of the present invention. The second figure shows the flowchart of the security method of the embodiment of the present invention.

100:Security system

11: Monitoring device

111: sensor

112: camera

113: Memory

114:Edge computing processor

12: Controller

13: Network

14:Security Center

15: End user

Claims (15)

A security system comprising: a monitoring device, used to monitor preset events and capture images of the monitored scene; and a controller, used to control the monitoring device and transmit the captured image; Wherein when the preset event is detected and the captured image contains objects, the monitoring device adjusts the number of captured images, the number of transmitted images or the resolution of images. The security system as claimed in claim 1, wherein the controller includes a gateway. For example, the security system of claim 1 further includes: A security center or an end user, the controller transmits the captured image to the security center or the end user via the network. The security system according to claim 1, wherein the monitoring device includes: a sensor for detecting the preset event; a camera for capturing the captured image; and An edge computing processor is used for detecting whether the captured image contains objects. As the security system of claim 4, wherein the monitoring device further includes: A memory is used for temporarily storing images captured by the camera. The security system according to claim 4, wherein the sensor comprises a passive sensor. The security system according to claim 6, wherein the passive sensor includes a passive infrared sensor, and the preset event indicates that the object has moved. The security system according to claim 6, wherein the passive sensor includes a fire sensor, and the preset event indicates that a fire-related object occurs. The security system according to claim 8, wherein the fire sensor includes a smoke sensor and the preset event indicates that smoke occurs, or includes a heat sensor and the preset event indicates that flame occurs. The security system according to claim 4, wherein when in the away-home mode, the controller turns on the sensor. The security system according to claim 4, wherein when the sensor detects the preset event, the sensor activates the camera to capture images. The security system according to claim 11, wherein when the sensor detects the preset event, the controller transmits the captured image according to the image transmission number. The security system according to claim 12, wherein the controller transmits all the captured images. The security system according to claim 12, wherein the controller only transmits images containing detected objects. The security system of claim 12, wherein the controller uses a first resolution to transmit images containing detected objects, and uses a second resolution to transmit images that do not contain detected objects, wherein the second resolution is lower than the first resolution.

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