Indoor alarm device using wireld TV network as media

A cable TV network and alarm device technology, applied in the direction of simultaneous/sequential multi-TV signal transmission, alarms, instruments, etc., can solve the problems of bulky equipment, large dependence on the power grid, and high requirements for installation conditions, and achieve flexible changes in power, Strong anti-interference ability and good alarm effect

Inactive Publication Date: 2006-09-13
天津市北辰区人民政府人民防空办公室
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  • Summary
  • Abstract
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Problems solved by technology

The disadvantages of this type of siren are: ①. The signal distinction is single, voice alarm cannot be performed, and it is difficult to adapt to modern complex and changeable emergencies
②. The equipment is heavy, the cost is high, and the installation conditions are high
③.380v AC power supply, highly de

Method used

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  • Indoor alarm device using wireld TV network as media
  • Indoor alarm device using wireld TV network as media
  • Indoor alarm device using wireld TV network as media

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[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] figure 1 It is a three-dimensional view of the structure of the central controller of the present invention; figure 2 Yes figure 1 The rear view; image 3 Is a block diagram of the circuit connection of the present invention; Figure 4a , Figure 4b Yes image 3 The circuit connection diagram of the central control circuit 101; Figure 5 Is a perspective view of the terminal structure of the present invention; Figure 6 is a diagram of the terminal circuit connection of the present invention; Figure 7 It is the connection diagram of the power circuit of the terminal circuit of the present invention; Figure 8 It is the pulse waveform diagram of the output terminal of MCU IC1 after the control keys K1 to K5 are triggered; Picture 9 It is the pulse waveform diagram of the output terminal of MCU IC1 after the stop key K6 is triggered; Picture 10...

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Abstract

An indoor alarm device utilizing cable TV network as media is prepared as connecting output end of central control circuit to input end of modulator, connecting output end of modulator to input end of cable TV network, connecting FM plug of signal output socket at user end on cable TV network to signal input end of terminal circuit on terminator through cable.

Description

technical field [0001] The invention relates to a civil air defense alarm device, in particular to an indoor air defense alarm device using a cable TV network as a medium. Background technique [0002] Existing civil air defense alarm device mainly is an electric siren, and its working principle is to drive a wind wheel rotation that has several sounding holes to sound with a motor, and distinguish the signal types with time intervals. The disadvantages of this type of siren are: ①. The signal is single, and voice alarm cannot be performed, so it is difficult to adapt to modern complex and changeable emergencies. ②. The equipment is heavy, the cost is high, and the installation conditions are high. ③. 380v AC power supply, highly dependent on the power grid. ④. The target installation location is obvious, easy to damage and difficult to restore. ⑤. With the development of urban construction, more and more high-rise buildings are standing in the central urban area, resulti...

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Application Information

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IPC IPC(8): G08B25/00G08B25/01H04N7/08
Inventor 孔付林
Owner 天津市北辰区人民政府人民防空办公室
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