CN103218895A - Security and protection system based on wireless sensor - Google Patents

Abstract

The embodiment of the present invention discloses a security system based on wireless sensors. The system includes: a general household controller, a detection node, and an execution node; Send to the home master controller and the execution node; the home master controller is used to monitor all the detection nodes and the execution nodes, and judge which of the detection nodes in the home is abnormal according to the abnormal information , and send the abnormality information of the detection node to the property management center through the network; the execution node is used to receive the abnormality information sent from the detection node, and perform an alarm operation according to the abnormality information. In the embodiment of the present invention, the advantages of short-distance wireless communication and long-distance wireless communication are combined, which facilitates system deployment and realization, realizes a remarkable effect of a security system, and reduces costs.

Description

A Security System Based on Wireless Sensor

technical field

The invention relates to the technical field of home security, in particular to a security system based on wireless sensors.

Background technique

In the process of urban informatization construction, the community, as the basic unit of the city, is closely related to the lives of residents and is playing an increasingly important role. Home security is a top priority in community security, and a lot of attention is paid to it. Traditional home security precautions are to install bulky and heavy anti-theft doors, bars, and locks to resist foreign intruders. However, with the diversification of criminals' means of committing crimes, traditional physical protection methods are difficult to meet the needs of modern family security. In addition, it is difficult for the owner who is away from home to know the situation at home. Once unexpected accidents such as gas leaks and fires occur, the residents cannot deal with them in time and cause serious losses. Therefore, modern families urgently need high-tech family safety precautions to protect the safety of life and property. The distributed, self-organized network performance and wireless communication technology of wireless sensor network provide a choice for realizing smart home security.

Wireless sensor networks are generally composed of spatially distributed and independent network nodes. Nodes contain sensors to monitor physical or environmental conditions of the node, such as temperature, sound, vibration, pressure, motion, or pollutants. Each node typically has a radio transceiver or other wireless communication device to transmit sensory data over the network to databases and other users. In this way, wireless sensor networks can be used for data collection (Data Collection), target tracking (Object tracking) and alarm monitoring (Alarm monitoring), etc. The system can complete the assigned tasks autonomously according to the environment under unattended monitoring.

Through the scientific design of the security system based on wireless sensors, the comprehensive use of security technology and other related products to form an electronic system or network for household security and anti-theft alarm processing. It is the most important way and means to deal with the current increasingly complex social situation, especially for burglary and robbery cases. It provides an effective platform for the establishment of an integrated new family prevention and control system, which can effectively improve the scientific and technological content of family prevention and control and social security. Content, the development prospect is broad. Applying wireless sensor networks to community security systems greatly reduces the human input in community security and accelerates the digitalization process of community construction.

In the past few years, the development and application of wireless sensor network technology at home and abroad have made great progress. It is particularly notable in markets such as home automation, industrial automation, building controls, smart metering, and power management markets. At the same time, the standard formulation of wireless sensor networks is progressing rapidly, greatly reducing the complexity of smart sensors and wireless sensor networks. For example, the 1451 working group (IEEE1451) of the International Institute of Electrical and Electronics Engineers (IEEE) has established a plug-and-play standard for smart sensors, so that all sensors that comply with the standard can be used with other instruments and systems work together.

Home security has always been the focus of people's attention. At present, most residential buildings use iron fences to prevent theft, but the disadvantage of this is that it is inconvenient for residents to escape when an emergency such as a fire occurs; Go to the public security department, and call out the user's detailed information in time through the established database. However, such products are expensive and difficult to promote.

There are a small number of urban families who have purchased and installed simple anti-theft alarm devices and sent the alarm information to their designated telephones. Due to the unstable product quality, no effective false alarm prevention measures have been taken, and the alarm information cannot be effectively received. Analysis and filtering can not be effectively guaranteed, so the anti-theft effect is not ideal. There are also some communities that share the equipment and lines with the building intercom system, connect the indoor extension to the anti-theft alarm device, and send the alarm information to the property management center of the community to achieve the purpose of family anti-theft. However, due to the different functions and principles of the above two products, the anti-theft alarm only exists as an auxiliary function. Therefore, parallel connection on the same device host and the same line will easily cause equipment and line failures, and the alarm information cannot be effectively monitored. Analysis, filtering and storage, the phenomenon of false alarms is more serious, and the anti-theft effect is not obvious, so most families abandon it. The traditional mechanical (anti-theft net, anti-theft window) home defense system has exposed many hidden dangers in actual use. The anti-theft net not only affects the overall appearance of the building, but also brings people a sense of depression. accidents, it is difficult to escape; and the use of simple anti-theft and anti-alarm devices is likely to cause equipment and line failures, false alarms, etc.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art. The present invention provides a security system based on wireless sensors, which combines the advantages of short-distance wireless communication and long-distance wireless communication, facilitates the deployment and realization of the system, and realizes the security system. The effect is remarkable and the cost is reduced.

In order to solve the above problems, the present invention proposes a security system based on wireless sensors, the system includes: a general family controller, a detection node, and an execution node;

The detection node is used to monitor the abnormal situation in the home, and send the abnormal information to the general household controller and the execution node in a wireless manner;

The home master controller is used to monitor all the detection nodes and the execution nodes, and judge which of the detection nodes in the home has an abnormal situation according to the abnormal information, and send the abnormal information of the detection node to the property through the network control center;

The executing node is configured to receive the abnormal information sent from the detecting node, and perform an alarm operation according to the abnormal information.

Preferably, the detection node includes: a power supply module, a processor module, a wireless communication module and a detection module.

Preferably, the detection module is a sensor.

Preferably, the sensor includes any one or more of a light sensor, a smoke sensor, a carbon monoxide sensor, a pyroelectric sensor, and a moderate sensor.

Preferably, all detection nodes and execution nodes in the network register with the home master controller, and the home controller obtains information of all detection nodes and execution nodes in the home.

Preferably, the information of the detection node and the execution node includes: status information and location information.

Preferably, the processor module is an embedded microprocessor nRF9E5.

Preferably, the wireless mode is a single-hop mode or a multi-hop mode.

Preferably, the execution node includes: an alarm module, configured to perform an audible and visual alarm operation.

Preferably, the general household controller sends the abnormality information of the detection node to the property management center through the GPRS network or the telephone network.

In the embodiment of the present invention, the advantages of short-distance wireless communication and long-distance wireless communication are integrated, which facilitates the deployment and realization of the system, realizes a remarkable effect of the security system, and reduces the cost.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

1 is a schematic diagram of the structural composition of a wireless sensor-based security system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the structural composition of a detection node in an embodiment of the present invention;

Fig. 3 is a schematic diagram of the function realization of the detection node in the embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is a schematic diagram of the structural composition of a wireless sensor-based security system according to an embodiment of the present invention. As shown in Fig. 1 , the system includes: a home master controller 1, a detection node 2, and an execution node 3;

The detection node 2 is used to monitor the abnormal situation in the home, and sends the abnormal information to the home master controller 1 and the execution node 3 by wireless;

The home master controller 1 is used to monitor all detection nodes 2 and execution nodes 3, and judge which detection node in the home is abnormal according to the abnormal information, and send the abnormal information of the detection node 2 to the property management center through the network;

The execution node 3 is used to receive the abnormal information sent from the detecting node 2, and perform an alarm operation according to the abnormal information.

In the embodiment of the present invention, the security system adopts a star network topology centered on the general family controller. The whole system adopts a two-layer structure. The bottom layer is various detection nodes and execution nodes deployed in the home. The execution nodes are equipped with alarm modules or alarm devices, which can perform operations such as sound and light alarms; the upper layer is the home master controller, which is responsible for monitoring The work of all nodes and execution nodes can realize human-computer interaction through the overall smart home terminal system.

Each detection node in the system is equipped with a wireless communication module, which can form a wireless sensor network through self-organization, so as to realize the transmission of home environment information. After the system is started, the user can complete the initial setting of the system according to the needs through the human-computer interaction interface, that is, to arm or disarm the system. All detection nodes and execution nodes in the network need to register with the network, so that the home master controller can determine the status information and location information of the nodes in the home. When the detection node detects abnormal conditions in the home, it immediately transmits the information wirelessly (single-hop or multi-hop) to the home master controller and execution node. The general controller judges which detection node in the home and where the detection node is abnormal, and collects the abnormal information of the node, and then passes it to the community property management center through the GPRS network in the form of a text message or through the telephone network of China Unicom, so as to realize intelligent security. .

The function of the detection node is to detect abnormal conditions in the home environment and collect various abnormal information. As shown in FIG. 2 , the detection node 2 includes a power supply module 20 , a processor module 21 , a wireless communication module 22 and a detection module 23 , wherein the detection module 23 is a sensor. In a specific implementation, the sensor includes any one or more of a light sensor, a smoke sensor, a carbon monoxide sensor, a pyroelectric sensor, and a moderate sensor; and the processor module 21 is an embedded microprocessor nRF9E5.

In order to simplify the hardware structure of the node, the embedded microprocessor nRF9E5 is used, which can work in ShockBurst mode, support multi-point communication, have high transmission rate and strong anti-interference ability. nRF9E5 needs to load the execution program from the external memory. To configure the 25AA230 Electrically Erasable Programmable Read-Only Memory (EEPROM,) through the serial peripheral interface (Serial Peripheral Interface, SPI) and micro Processors exchange data. When nRF9E5 receives valid data or detects that there is a carrier signal around, it can notify the processor through an interrupt, which can speed up the response speed of the module's transceiver, and can improve the wireless communication capability of the node by using a single-ended 50Ω antenna.

When the system is started, the detection node is initialized at the upper point, the detection mode is turned on, and then the detection node can enter a dormant state, and the sensor configured by the node detects the home. When an abnormal situation is detected, the detection node is first triggered to determine the location of the abnormality; then it is reported to the general controller; finally the general controller makes a decision to determine whether to issue an alarm. The implementation process of the detection node function is shown in Figure 3. The function of the home master controller is to monitor the working status of the entire system, and it needs to perform operations such as human-computer interaction, collection of underlying network data, and coordination of network nodes. Considering that these functions have high requirements on the software and hardware platform of the general controller, the embedded system is built with the ARM processor as the core, and the Linux operating system is used as the software development platform. It adopts 32-bit RISC embedded chip S3C2440 chip, which has strong processing ability and running speed. Completing the software design with the Linux operating system can support most chips, and is easy to transplant and develop. The user application program consists of a series of functions used to complete the corresponding functions.

In the embodiment of the present invention, the advantages of short-distance wireless communication and long-distance wireless communication are integrated, which facilitates the deployment and realization of the system, realizes a remarkable effect of the security system, and reduces the cost.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium can include: Read Only Memory (ROM, Read Only Memory), Random Access Memory (RAM, Random Access Memory), disk or CD, etc.

In addition, the wireless sensor-based security system provided by the embodiment of the present invention has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiment is only used to help understand the present invention. The method of the invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be understood To limit the present invention.

Claims (10)

1. the safety-protection system based on wireless senser is characterized in that, described system comprises: family's master controller, probe node, XM;

Described probe node is used for monitoring the abnormal conditions of household, and abnormal information is sent to described family master controller and described XM by wireless mode;

Described family master controller is used to monitor all described probe nodes and described XM, and judge according to described abnormal information abnormal conditions appear in which described probe node in the household, and the abnormal information of this probe node is sent to the estate management center by network;

Described XM is used to receive the abnormal information from described probe node, and carries out alarm operation according to described abnormal information.

2. the safety-protection system based on wireless senser as claimed in claim 1 is characterized in that, described probe node comprises: power module, processor module, wireless communication module and detecting module.

3. the safety-protection system based on wireless senser as claimed in claim 2 is characterized in that, described detecting module is a sensor.

4. the safety-protection system based on wireless senser as claimed in claim 3 is characterized in that, described sensor comprise in optical sensor, smoke transducer, carbon monoxide transducer, pyroelectric sensor, the appropriate sensor any one or multiple.

5. the safety-protection system based on wireless senser as claimed in claim 1, it is characterized in that, all probe nodes and XM are carried out network registry to described family master controller in the network, and described family chamber controller obtains the information of all probe nodes and XM in the household.

6. the safety-protection system based on wireless senser as claimed in claim 5 is characterized in that, the information of described probe node and XM comprises: status information and positional information.

7. the safety-protection system based on wireless senser as claimed in claim 2 is characterized in that, described processor module is for embedding microprocessor nRF9E5.

8. the safety-protection system based on wireless senser as claimed in claim 1 is characterized in that, described wireless mode is single-hop mode or multi-hop mode.

9. the safety-protection system based on wireless senser as claimed in claim 1 is characterized in that, described XM comprises: alarm module is used to carry out the sound and light alarm operation.

10. the safety-protection system based on wireless senser as claimed in claim 1 is characterized in that, described family master controller sends to the estate management center by GPRS network or telephone network with the abnormal information of this probe node.

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