CN205080679U - Intelligent house theftproof alarm system - Google Patents

Abstract

The utility model relates to an intelligent residential anti-theft alarm system, which includes an automatic alarm controller for users, a central controller for monitoring and management centers in residential areas, an anti-theft detector, a control input/output module, an emergency call switch, a light alarm, an indicator light, and a TC35I Module, communication module, power supply circuit and main control computer, the anti-theft detector, control input/output module, emergency call switch, light alarm, indicator light, TC35I module are connected with the user end automatic alarm controller, the main control The computer is connected to the central controller of the community monitoring and management center, and the central controller of the community monitoring and management center is connected to the user end automatic alarm controller through the communication module. When the alarm occurs, the utility model can automatically alarm and notify the head of the household; it can set two working states of fully armed state and disarmed state; the false alarm rate is low and the sensitivity is high.

Description

An intelligent residential anti-theft alarm system

technical field

The utility model relates to the field of house intelligence, in particular to an intelligent house anti-theft alarm system.

Background technique

With the continuous development of society, the rapid development of microelectronics technology and network technology has made people's requirements for living environment become higher and higher, so intelligent housing was born. Due to the country's reform and opening up and the continuous development of the market economy, the number of floating population in major cities has also continued to increase, and the increase in the floating population has also brought many unstable factors, especially in criminal cases of burglary , has remained high, which makes the anti-theft alarm system an indispensable part of residential construction. And traditional anti-theft method is to carry out the installation of anti-theft safety door, anti-theft window. This traditional anti-theft method can no longer meet people's requirements, so the requirements for families and residential quarters are getting higher and higher.

Utility model content

In view of this, the purpose of the utility model is to provide an intelligent residential anti-theft alarm system.

In order to achieve the above purpose, the utility model provides the following technical solutions: an intelligent residential anti-theft alarm system, including the user's automatic alarm controller, the central controller of the community monitoring and management center, the anti-theft detector, the control input/output module, and the emergency call switch , light alarm, indicator light, TC35I module, communication module, power supply circuit and main control computer, the anti-theft detector, control input/output module, emergency call switch, light alarm, indicator light, TC35I module and user end automatic The main control computer is connected to the central controller of the community monitoring and management center, and the central controller of the community monitoring and management center is connected to the user-end automatic alarm controller through the communication module.

Preferably, the user automatic alarm controller is connected with a watchdog circuit.

Preferably, the central controller of the community monitoring management center is connected with a watchdog circuit.

Preferably, the anti-theft detector includes a door magnetic switch, an infrared detector, and a sound-activated detector respectively connected to the user automatic alarm controller.

The beneficial effects of the utility model are:

1) When the alarm occurs, the system can automatically alarm and notify the head of the household.

2) The system can set two working states: fully armed state and disarmed state.

3) The false alarm rate of the system is low and the sensitivity is high.

Description of drawings

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings, wherein:

Figure 1 is a block diagram of an intelligent residential anti-theft alarm system

Figure 2 is a schematic diagram of the principle of the anti-theft alarm detector

Figure 3 is the door magnetic switch signal processing circuit

Figure 4 is the SIM card reader

Figure 5 is the TC35I power supply module;

Figure 6 is the minimum system of AT89C52 microcontroller

Figure 7 is the reset circuit.

detailed description

The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

An intelligent residential anti-theft alarm system, including a user automatic alarm controller, a central controller of a community monitoring and management center, an anti-theft detector, a control input/output module, an emergency call switch, a light alarm, an indicator light, a TC35I module, and a communication module , power supply circuit and main control computer, the anti-theft detector, control input/output module, emergency call switch, light alarm, indicator light, TC35I module are connected with the user end automatic alarm controller, the main control computer is connected with the community monitoring The central controller of the management center is connected, and the central controller of the community monitoring management center is connected with the automatic alarm controller of the user end through the communication module.

The intelligent residential anti-theft alarm system is installed inside the residential buildings. It can be seen from the figure that the anti-theft alarm system is responsible for the control and detection of various areas inside and outside the residence, and obtains the data collected by each detector in the working state, and then processes it. When someone enters the detection area, the detector will send an analog signal to the user-side automatic alarm controller, and the controller will notify the householder in the form of a text message through the TC35I module, and then get in touch with the central controller of the community to send the relevant information to The master computer of the community.

The central controller of the community monitoring and management center is generally installed in the security duty room of the community, so that the duty personnel can manage and monitor multiple client controllers while performing normal duty. The main function of the central controller is to accept and process the information transmitted from the alarm controller at the entry end. Once the central controller receives the alarm signal, it will store the alarm signal for later query. The main control computer can use the central control The alarm displays various alarm information, and at the same time notifies the duty personnel through the light alarm, so that it can take some effective measures while making a quick alarm.

Preferably, the user automatic alarm controller is connected with a watchdog circuit.

Preferably, the central controller of the community monitoring management center is connected with a watchdog circuit.

Preferably, the anti-theft detector includes a door magnetic switch, an infrared detector, and a sound-activated detector respectively connected to the user automatic alarm controller.

The pyroelectric infrared detector does not need an additional infrared radiation source. The detector itself cannot emit any infrared rays to the outside world. When the detector detects infrared rays, it means that someone has entered; when no infrared rays are detected, it means that no one has entered.

Any object will emit infrared rays with different strengths due to the difference in surface temperature. It can be seen that the infrared waves emitted by various objects have different lengths. The infrared wavelength of the human body is generally about 10 μm. The utility model adopts HC-SR501 detector can detect the wavelength of 8 ~ 14μm, so it can detect illegal intruders well. Because of its internal built-in BISS001 chip, no external A/D converter is needed. When the intruder enters its detection range, it outputs a high level, and when the intruder leaves, it turns off the high power output after a delay and outputs a low level, thereby generating a light alarm and notifying the householder of an intrusion through a GSM message.

When installing the detector, the pyroelectric infrared detector can be installed directly on the wall or on the ceiling. The position of the detector should be installed so that the safety protection area is at the maximum value, and the horizontal viewing angle and detection range of the detector window should also be paid attention to, so that the intruder passes through the light area to be horizontal, so that the intruder can enter the infrared safety protection Within the light area, improve the sensitivity of its inspection. When a "dead angle" occurs, the relative angle between the window of the pyroelectric infrared detector and the warning will be adjusted, so that the "dead angle" can be removed. Pyroelectric infrared detectors can also be installed on the wall or corner by wall-mounting. However, the effect of installing in the corner of the wall is better than that of installing on the wall. The installation height is usually 2-2.5m. While the height is suitable, the window of the probe cannot be aimed at any object or area whose temperature will change rapidly; if the heat source cannot leave the detection area, the distance between the detector and the heat source should be kept at least 1.5m. In this way, the false alarm rate of the pyroelectric infrared detector can be effectively reduced.

Generally speaking, the pyro-infrared detector is the most effective detection device to prevent illegal intrusion. If the installation position is correct, the detector may fail only in the following two cases: one is that the intruder travels at a very low speed When moving, it is generally less than 0.1m/s, making the detector unable to detect temperature changes in the area; the other is that the thermal radiation generated by illegal intruders is very small, making the detector unable to detect intruders.

The door magnetic switch is the simplest, most direct and effective detection device among all detectors. It is a switch, and people usually install the door magnetic switch on the door or window. The door magnetic switch is composed of a door magnetic switch and a door magnetic switch signal processing circuit.

When using the door magnetic switch, it should be fixed on a specific door or window. If you want to focus on the aesthetic requirements or the security performance requirements, you can use the exposed type or the embedded type. In addition, another very important link is the choice of the action distance. At the same time, it should also be noted that due to the different materials of the door and window, the action distance of the magnetic material is also different. Gaskets should be used when installing door magnetic switches on doors and windows of magnetic materials to keep them separated by a certain distance.

Generally, there are two methods of illegal intrusion: the first method is to steal the key of the head of the household and enter the room secretly; the second method is to use tools to pry open doors and windows. Take the intruder's way of entering as an example by pushing open the door of the head of the household. Once the intruder pushes open the door, an angle will be formed between the door and the door frame, and the displacement (electric wave) signal of the door sensor and magnet will be sent to the host immediately. Since the output signal of the door magnetic switch is relatively small, it can be amplified by the NPN triode to close the relay and send the alarm signal to the single-chip microcomputer. The door magnetic switch signal processing circuit is shown in Figure 3.

The function of the door magnetic switch is to protect the external area of the house. When there is someone at home, the door magnetic switch will not work; when there is no one at home, the door magnetic switch will be turned on for protection. When an intruder enters the house through the door or window, the user-side automatic alarm will receive the signal from the door magnetic switch, then start the light alarm, and notify the owner of the illegal intrusion activity status in the house through GSM text messages.

The sound-activated detector uses a microphone as a sensor to check any sound made by the intruder in the activity room in the security area (such as the sound made by opening the door and window, moving objects, walking, etc.), and adopts this sound signal , and convert the sound into an electrical signal, and send it to the user-side alarm controller through the connection. The converted electrical signal can be used by the duty personnel of the monitoring center to directly monitor or record the area where illegal intrusion occurs, and can also be sent to the alarm circuit. When the output level of the detector reaches a certain value within the safety protection range, the alarm device will be turned on to send out a light alarm and the householder will be notified by GSM SMS. Voice-activated detectors are usually integrated with other alarm devices and used as an alarm review device. This method can greatly reduce the rate of false alarms and missed alarms.

TC35I Siemens industrial GSM module is an industrial-grade GSM module that supports industrial text messages. The working frequency band is GSM1800 and EGSM900. Its voltage range is between 3.3 and 4.8V. The current is 25mA, the current is 300mA (average) in the transmitting state, and the peak value is 2.5A; the communication module can transmit two signals of data and voice, and the power consumption is 1W in the frequency band of GSM1800 (category 4), and the power consumption is 1W in the frequency band of EGSM900 (for ) channel is 2W, connected to the antenna and SIM card reader through the antenna connector and interface connector respectively. The voltage of the SIM card reader is 3V/1.8V, and the data interface (CMOS level) of TC35I can transmit data and commands bidirectionally through AT commands. The automatic baud rate is 1.2kb/s～115kb/s, and the baud can be selected The rate is 300b/s～115kb/s. It supports SMS (ShortMessageService, short message) in PDU and Text format, and TC35I can perform restart and fault recovery operations through shutdown signals or AT commands.

TC35I module is composed of 6 parts including SIM card reader, antenna, power supply module and flash memory. As the most critical part of TC35I, the main operation of the processor is to process the data signal and voice signal in the GSM terminal, and it also includes all the digital and analog functions in the cellular radio frequency device.

TC35i has a total of 40 pins, which are brought out through a ZIF connector. These 40 pins can be divided into 5 categories, namely power supply, data input/output, SIM card, audio interface and control.

TC35I uses an external SIM card, 24~29 are SIM card pins, and the connection method between the SIM card and TC35I is: CCRST, CCIO, CCCL, CCVCC and CCGND on the SIM card reader are directly connected to the same name of the TC35i through the SIM card reader. The CCIN pin of the ZIF connector is used to detect whether the SIM card is inserted well. If it is checked that the SIM card has been placed, there will be a high level output from the CCIN pin. If it is not placed properly, there will be a low level. Output from CCIN pin. The SIM card reader circuit is shown in Figure 4

When the input power of the TC35I module is not greater than 3.3V, the TC35I module will automatically shut down. If the TC35I is in the state of emission, the maximum value of its current can be as high as 2A. At the same time, when the current value is the largest, the decrease of the power supply voltage (the voltage of the input module) should be less than 0.4V. It can be seen that the TC35I module has a very high standard for the power supply, so the resistance value of the internal resistance of the power supply cannot be greater than 200mΩ.

The MCU controls TC35I on/off, reset, etc. through three I/O ports, and communicates with TC35I through the serial port. The communication rate is 9600Kbps. It adopts 8-bit asynchronous communication mode, 1 start bit, 8 data bits, and 1 stop bit. bit.

The TTL positive level logic of the input and output of the TC35I module is not +5V, but +4.3V, as shown in Figure 5, so add port protection if necessary.

In this system, the controller adopts the minimum system of single-chip AT89C52, as shown in Figure 6, the single-chip is a high-performance CMOS8-based low-voltage single-chip, which contains 256bytes of random access data memory (RAM) and 8kbytes of memory Repeatedly erasable Flash read-only program memory, the device is produced by ATMEL's high-density, non-volatile storage technology, compatible with the standard MCS-51 instruction system, built-in general-purpose 8-bit central processing unit and Flash storage unit, AT89C52 single-chip microcomputer in It has a wide range of applications in the electronics industry.

In this minimum system, the clock is generated in the internal clock mode, that is, a crystal oscillator circuit is connected outside the microcontroller. This circuit contains two capacitors and a crystal oscillator. The function of the capacitor is to stabilize the frequency and quickly start the oscillation. The capacitance value is in the range of 5 to 30pF. This system uses a 30pF capacitor, and the crystal oscillator frequency generated in the crystal oscillator circuit A higher value can increase the running speed of the MCU instructions, but correspondingly, the power consumption and noise will also increase, so on the premise of satisfying the system function, a lower crystal oscillator frequency should be selected.

Resetting refers to making the microcontroller or other components in the system in a certain initial state. The work of the single chip microcomputer starts from the reset.

The reset operation mode adopted by this system is button reset. When the reset operation is performed, a high-level reset signal is applied to the RST pin (an input port of an external reset signal provided by the user-end controller), but it must be kept for at least two cycles, and the reset operation is performed inside the microcontroller. The user-side controller responds to the reset signal and performs initialization operations of related components, but the user-side controller performs an internal reset operation at the beginning of the second mechanical cycle after the RST high level is effective. When the reset signal becomes low level, the microcontroller starts to execute the program. The reset circuit is shown in Figure 7.

Finally, it is noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in the form Various changes can be made in the above and in the details without departing from the scope defined by the claims of the present invention.

Claims (4)

1. an intelligent residence guard against theft and alarm system, it is characterized in that: comprise user's automatic alarm controller, cell monitoring administrative center central controller, pir intrusion detector, control inputs/output module, distress call switch, visual alarm, pilot lamp, TC35I module, communication module, power circuit and host computer, described pir intrusion detector, control inputs/output module, distress call switch, visual alarm, pilot lamp, TC35I module is connected with user side automatic alarm controller, described main control computer is connected with cell monitoring administrative center central controller, described cell monitoring administrative center central controller is connected with user side automatic alarm controller by communication module.

2. intelligent residence guard against theft and alarm system according to claim 1, is characterized in that: described user's automatic alarm controller is connected with watchdog circuit.

3. intelligent residence guard against theft and alarm system according to claim 1, is characterized in that: described cell monitoring administrative center central controller is connected with watchdog circuit.

4. intelligent residence guard against theft and alarm system according to claim 1, is characterized in that: described pir intrusion detector comprises the door status switch, infrared eye, the voice activated detector that are connected with user's automatic alarm controller respectively.