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Laser detecting alarming method and apparatus

A technology of laser detection and alarm devices, which is applied in optical device exploration, alarms, anti-theft alarms, etc., and can solve problems such as being susceptible to human interference

Inactive Publication Date: 2009-10-07
XIAMEN STELCOM INFORMATION & TECH
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Problems solved by technology

[0003] The present invention provides a laser detection and alarm method and device, which overcomes the disadvantages of the laser detection and alarm method in the background technology that are susceptible to human interference

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  • Laser detecting alarming method and apparatus

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Embodiment Construction

[0032] A laser detection and alarm device, please refer to figure 1 , which includes a controller 100, a laser emitting device 200, a laser receiving device 300, an alarm device 400 and a power supply (such as a battery or DC power supply) 500. The controller 100 is signally connected to the laser emitting device 200 , the laser receiving device 300 and the alarm device 400 . The power supply 500 is connected to the controller 100, the laser emitting device 200, the laser receiving device 300 and the alarm device 400 to provide them with power.

[0033] The controller 100 may adopt a single-chip microcomputer or a logic circuit with a single-chip microcomputer function, such as FPGA or CPLD. The controller 100 is provided with an encryption algorithm module DES and a timer.

[0034] The DES algorithm is a data encryption standard for the computer systems of other departments except the Department of Defense that the US National Bureau of Standards began to study in 1973. On ...

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Abstract

The invention discloses a laser detecting alarming method and apparatus. The method includes: Step 1, starting up the laser emission device; Step 2, collecting real-time data, which is a numerical value of the user operations parameter self-recorded by the laser emission apparatus; step 3, setting the real-time data as cipher key of encryption algorithm, calculating a calculated data by using encryption algorithm, calculating the pulse interval time delta T [n] by calculated data, setting the delta T [n] as the pulse interval time of the laser emission apparatus; Step 4, determining whether the laser receiver is intended to receive to the laser signal, if so, it is safe, otherwise, the alarm signal is sent to the alarm device, and performing the step 5; Step 5, the alarm device emiting alarm. The alarm method and strong has strong interference immunity and strong confidentiality.

Description

Technical field [0001] The invention relates to a laser detection and alarm method and device. Background technique [0002] Laser detection and alarm has been widely used in the field of security, for the general public to use for anti-theft, monitoring or detection. Existing laser detection and alarm methods, such as 200620078800, 200720127752, and 98207455 announced by the Chinese patent database, all have the following deficiencies: 1. Because the pulse interval time of laser emission is constant or the interval time is limited, the confidentiality is poor, so it is vulnerable to Human interference or easy to be cracked; 2. The average laser emission time is long, and the emission energy consumption is large. Contents of the invention [0003] The present invention provides a laser detection and alarm method and device, which overcomes the disadvantage that the laser detection and alarm method in the background technology is susceptible to human interference. [0004...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/00G08B13/181G08B13/183G01V8/10
Inventor 陈晓忠
Owner XIAMEN STELCOM INFORMATION & TECH
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