CN203706387U - MMS alarm system - Google Patents

Abstract

The utility model relates to an alarm system, in particular to a multimedia message alarm system. A multimedia message alarm system, comprising a single-chip microcomputer, a video camera unit, a GPRS module, a sensor alarm unit and a mobile phone user terminal, the single-chip microcomputer is an AT89C52 single-chip microcomputer, and the AT89C52 single-chip microcomputer expands 3 groups of RS-232 serial ports through a serial port expansion chip, and the 3 The group RS-232 serial ports are respectively connected to the video camera unit, GPRS module, and sensor alarm unit at the same time, and the GPRS module is wirelessly connected to the mobile phone user terminal. The data information single-chip microcomputer sent by the alarm unit acts on the video camera unit, and the single-chip microcomputer sends the image transmitted by the video camera unit to the GPRS module, and the GPRS module sends the image to the mobile phone user terminal through MMS. The utility model has the advantages of simple structure and safe and reliable system operation.

Description

A multimedia message alarm system

technical field

The utility model relates to an alarm system, in particular to a multimedia message alarm system.

Background technique

With the intelligent development of information technology, the new generation of security system requires strict management of public and private property. If there is a thief breaking in or a fire occurs, the alarm should be reported in time. There are currently two types of common alarm systems on the market: one is an audible alarm, which emits a high-decibel sound alarm, and the alarm distance is limited; the other is monitoring through a camera, which is easily restricted by visibility and blind spots, and cannot be realized Real-time alarm can only provide clues for post-event tracking. These two systems can only monitor the items and give an alarm when they are stolen, but they cannot transmit back the images of the items in the monitored place in real time. ``

Contents of the invention

The utility model aims at the defects existing in the prior art, and provides a GPRS communication alarm system based on single-chip microcomputer control and command. In addition to the conventional way of alarming, the system can also alarm by sending MMS to the user's mobile phone, and the user can Combining MMS images to analyze on-site conditions and make corresponding responses in a timely manner; under normal circumstances, users can also actively send text messages through mobile phones to remotely control the alarm system and automatically send MMS messages to users' mobile phones. Monitor the situation of the place to prevent problems before they happen.

The technical scheme provided by the utility model is:

A kind of MMS alarm system, comprising single-chip microcomputer, video camera unit, GPRS module, sensing alarm unit and mobile phone user terminal, it is characterized in that, described single-chip microcomputer is AT89C52 single-chip microcomputer, and AT89C52 single-chip microcomputer expands 3 groups of RS-232 serial ports through serial port expansion chip , the 3 groups of RS-232 serial ports are respectively connected to the video camera unit, GPRS module, and the sensor alarm unit simultaneously, the GPRS module is wirelessly connected to the mobile phone user terminal, and the single-chip microcomputer receives and analyzes the data information transmitted by the sensor alarm unit to make instructions, By analyzing the data information transmitted by the sensing alarm unit, the single-chip microcomputer makes an action on the video camera unit, and the single-chip microcomputer sends the image transmitted by the video camera unit to the GPRS module, and the GPRS module sends the image to the mobile phone user terminal through MMS.

Specifically, the video camera unit is a serial port camera.

Specifically, the sensing and alarming unit is one of an infrared sensor, a temperature and humidity sensor, a smoke sensor, and a wireless door magnetic sensor, or any combination of several of them.

Specifically, the mobile phone user terminal refers to an ordinary mobile phone and/or PDA with MMS and/or MME functions activated.

Specifically, the serial port expansion chip is a GM8123 chip.

The alarm system provided by the utility model can not only alarm in a conventional way, but also alarm by sending a multimedia message to the user's mobile phone, and the user can analyze the scene situation in combination with the image of the multimedia message, and can make a corresponding response in time; under normal circumstances , the user can also take the initiative to send text messages through the mobile phone and the remote alarm system automatically sends MMS to the user's mobile phone. The user can understand the situation of the monitored place in real time through the returned image, so as to prevent problems before they happen. The utility model has the advantages of simple structure and safe and reliable system operation. the

Description of drawings

Fig. 1 is the structural representation of specific embodiment;

Fig. 2 is a pin diagram of the single-chip microcomputer in Fig. 1;

FIG. 3 is a schematic circuit diagram of the GPRS module in FIG. 1 .

Detailed ways

Figure 1 is a module diagram of a multimedia message alarm system, which includes an AT89C52 single-chip microcomputer, a GM8123 chip, a serial port camera, a GPRS module, a sensing alarm unit, and a mobile phone user terminal. The AT89C52 single-chip microcomputer expands 3 groups of RS-232 serial ports through the GM8123 chip, and these 3 groups of RS-232 serial ports are respectively connected with the sensing alarm unit, the serial port camera and the GPRS module. The GPRS module is wirelessly connected with the mobile phone user terminal. The single-chip microcomputer receives and analyzes the data information transmitted by the sensing alarm unit and then makes instructions. The image is sent to the GPRS module, and the GPRS module sends the image to the mobile phone user terminal through MMS.

It should be pointed out that the combination of the sensing alarm unit infrared sensor, smoke sensor and wireless door magnetic sensor used in this specific embodiment, the mobile phone user terminal is an ordinary mobile phone with the MMS function enabled.

In this system, the AT89C52 single-chip microcomputer is in the core position of control and command. Figure 2 shows the pin diagram of the AT89C52 single-chip microcomputer. The AT89C52 single-chip microcomputer receives and analyzes the data sent by the outside sensor, smoke sensor and wireless door magnetic sensor. When the data reaches the set abnormal threshold, the AT89C52 single-chip microcomputer makes an instruction to The outside line sensor, smoke sensor and wireless door magnetic sensor give an alarm. At the same time, the AT89C52 single-chip microcomputer makes an instruction to start the serial port camera to take pictures, and sends the pictures from the serial port camera to the GPRS module. The serial port camera realizes the functions of on-site picture capture and compression storage, and the AT89C52 single-chip microcomputer controls the work of the serial port camera through the protocol agreed by the serial port. The AT89C52 single-chip microcomputer sends an operation command to the serial port camera, and the serial port camera responds. Then the MMS is sent to the user's mobile phone by the GPRS module.

Figure 3 is the schematic circuit diagram of the GPRS module. The data communication between the GPRS module and the AT89C52 microcontroller is mainly through the data transmission between the port TXD0 of the GPRS module and the port TXD of the AT89C52 microcontroller, and the data transmission between the RXD0 port of the GPRS module and the port RXD of the AT89C52 microcontroller. The TXD0 port on the GPRS module is used to receive data from the AT89C52 microcontroller, and the TXD port on the AT89C52 microcontroller is used to transmit data to the GPRS module. The RXD0 port on the GPRS module is used to send data to the AT89C52 microcontroller, and the RXD port of the AT89C52 microcontroller is used to receive the data transmitted from the GPRS module. There are 5 power supply pins of the GPRS module and the voltage is 3.3-4.8 V, so the 5 pins are connected together and directly connected to the external power supply. The pin IGT on the GPRS module is mainly used for reset, and the role here is to do a reset conversion of the GPRS module.

In this system, the user can also actively send information to the GPRS module through the mobile phone, and then the GPRS module requests the AT89C52 single-chip microcomputer to start the serial port camera to take pictures, and the pictures taken are sent to the user's mobile phone through the GPRS module. You can know the situation of the monitored place in real time.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and not limit it; although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should understand that: still The specific implementation of the utility model can be modified or some technical features can be equivalently replaced; without departing from the spirit of the technical solution of the utility model, all of them should be included in the scope of the technical solution claimed by the utility model.

Claims (5)

1. A multimedia message alarm system, comprising single-chip microcomputer, video camera unit, GPRS module, sensing alarm unit and mobile phone user terminal, is characterized in that, described single-chip microcomputer is AT89C52 single-chip microcomputer, and AT89C52 single-chip microcomputer expands 3 groups of RS- 232 serial ports, the 3 groups of RS-232 serial ports are respectively connected to the video camera unit, GPRS module, and sensor alarm unit at the same time, the GPRS module is wirelessly connected to the mobile phone user terminal, and the single-chip microcomputer receives and analyzes the data information transmitted by the sensor alarm unit. Instructions, by analyzing the data information sent by the sensing alarm unit, the single-chip microcomputer makes an action on the video camera unit, and the single-chip microcomputer sends the image transmitted by the video camera unit to the GPRS module, and the GPRS module sends the image to the mobile phone user terminal through MMS. 2. A multimedia message alarm system according to claim 1, wherein the video camera unit is a serial port camera. 3. A kind of MMS alarm system according to claim 1, characterized in that, the sensing alarm unit is one or several of infrared sensors, temperature and humidity sensors, smoke sensors and wireless magnetic door sensors random combination. 4. A kind of MMS alarm system according to claim 1, characterized in that, said mobile phone user terminal refers to an ordinary mobile phone and/or PDA that has enabled MMS and/or MME functions. 5. A multimedia message alarm system according to claim 1, characterized in that the serial port expansion chip is a GM8123 chip.