Security protection system based on magnetic sensor

A magnetic sensor and security system technology, applied in the direction of electric alarm, open alarm, anti-theft alarm mechanical activation, etc., can solve problems such as alarm failure, and achieve strong adaptability, low power consumption, and strong stability. Effect

Inactive Publication Date: 2012-04-25
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But its disadvantage is that if the door has been opened more than 3cm, then the alarm will be invalid

Method used

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  • Security protection system based on magnetic sensor
  • Security protection system based on magnetic sensor
  • Security protection system based on magnetic sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] Embodiment: The magnetic sensor adopts MMC2120, the microprocessor adopts STM32, and the wireless module adopts nRF24L01. Powered by lithium battery.

[0018] The acquisition end is a patch with a size of about 35mm*25mm*5mm, which can be attached to the door or built into the object to be detected. The PCB inside the patch integrates MMC2120 magnetic field sensor, STM32 microprocessor, and nRF24L01 wireless transmission module. Stick the magnetic signal detection terminal on the edge of the door, preferably on the top of the door, and then power on. Afterwards, the monitor can hold the alarm terminal and observe the alarm indicator [ figure 2 Mark 7], or listen to the buzzer alarm sound, to monitor whether the door is opened.

[0019] Gently shake the door with your hand, you can observe the flashing indicator light on the alarm terminal, and hear the alarm sound of "Dididi" from the buzzer.

[0020] Acquisition of magnetic field signals:

[0021] Give the magnet...

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PUM

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Abstract

The invention relates to a security protection system based on a magnetic sensor and belongs to security equipment. The security protection system is divided into two parts, namely a magnetic signal acquisition end and an alarm signal receiving end. The security protection system comprises a magnetic signal acquisition module, a magnetic signal processing module, an alarm signal sending module, an alarm signal receiving module and a terminal light emitting diode (LED) and buzzer alarm module, wherein the magnetic signal processing module is implemented by a microprocessor through a buffer queue smoothing technology; the alarm signal sending module adopts a sending mode of the microprocessor; the alarm signal receiving module adopts a receiving mode of the microprocessor; and a terminal alarm module adopts a microprocessor LED and buzzer driving technology. The security protection system has the advantages of low cost, long signal transmission distance, high sensitivity, high stability, high anti-interference capacity, low power consumption, and high environment adaptability; manual configuration of parameters is not required; and the security protection system can be immediately used after installation.

Description

technical field [0001] The invention relates to a security system based on a magnetic sensor, belonging to security equipment. Background technique [0002] The security industry has gradually grown up with the development of the socialist market economy. Since the reform and opening up, the national economy has developed rapidly. Recently, the second quarter GDP figures released by the Japanese government show that China's GDP has surpassed Japan, which also means Japan ceded to China the position of "the world's second largest economy" which had been maintained for more than 40 years. Fuyu needs security, and security has naturally become a huge and sustainable potential market, which is also the root cause of the current boom in the security market. One door is no longer enough to stop criminals from breaking in, so improving the performance of the security system is undoubtedly an urgent problem to be solved. The magnetic sensor is added to the door, and the change of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B13/08G08B13/24
Inventor 朱明郑英东李龙彦邱登峰
Owner DALIAN UNIV OF TECH
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