Life detecting ball life searching device used for earthquake rescue

A technology of earthquake rescue and life detection ball, which is applied in seismology, measuring equipment, geophysical measurement, etc., can solve the problems of external noise interference, small range of audio search equipment, and inability to improve rescue efficiency, so as to improve rescue efficiency and detect The effect of increasing the area and improving the effectiveness

Inactive Publication Date: 2009-10-14
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] When the traditional audio search instrument works, it receives the sound signal from the trapped person through the sensor on the ground of the ruins. Since the trapped person is located under the ruins, the signal sent by it has natural attenuation and external noise in the process of being transmitted to the sensor. Therefore, it often makes it difficult for the detectors to effectively determine whether there are survivors in the ruins, and it is difficult to determine the approximate location of the survivors; in addition, the existing audio search instruments have a small detection range at one time, so that the rescue efficiency cannot be improved

Method used

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  • Life detecting ball life searching device used for earthquake rescue
  • Life detecting ball life searching device used for earthquake rescue
  • Life detecting ball life searching device used for earthquake rescue

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Embodiment Construction

[0017] The present invention consists of a life-seeking ball thrown into the ruins and a hand-held receiver. The structure and working principle of the life-seeking ball are as follows: figure 1 As shown, its working principle is: the voice signal received by the front-end microphone is sent to the phase-locked loop modulation unit for modulation after the voice signal received by the front-end microphone through active amplification and filtering, and the voice signal is modulated to 470.025~477.500 through FM modulation MHz frequency band. The modulated signal passes through the filter to filter out the noise signal outside the 470.025-477.500MHz frequency band, and the filtered high-frequency signal is pushed to a power of about 100mW through a two-stage high-frequency power amplifier, and finally the high-frequency signal is transmitted through the matching network and antenna. The signal is sent out.

[0018] The above-mentioned microphones for receiving voice signals ar...

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Abstract

The invention discloses a life detecting ball life searching device used for earthquake rescue; the searching device is composed of a life detecting ball dispersed and put in ruins and a hand-held receiver; the life detecting ball is internally provided with a single chip and a radio frequency transmitting circuit; the receiver is internally provided with the single chip and a radio frequency receiving circuit; the single chips in the life detecting ball and the receiver are controlled by programs, thereby realizing the storage of data of working passage of the life detecting ball and the setting of phase locking frequency. The device has the advantages of strong interference rejection, large searching range, and the like; and the device can obtain the positions of survivals directly and rapidly.

Description

technical field [0001] The invention relates to a post-earthquake life search device, in particular to a life-seeking ball life search device which can be used for earthquake rescue. Background technique [0002] When the traditional audio search instrument works, it receives the sound signal from the trapped person through the sensor on the ground of the ruins. Since the trapped person is located under the ruins, the signal sent by it has natural attenuation and external noise in the process of being transmitted to the sensor. Therefore, it often makes it impossible for the detectors to effectively judge whether there are survivors in the ruins, and it is difficult to judge the approximate location of the survivors; in addition, the existing audio search instruments have a small detection range at one time, so that the rescue efficiency cannot be improved. Contents of the invention [0003] The object of the present invention is to provide a life-seeking ball life search ...

Claims

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Application Information

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IPC IPC(8): G01V1/00H04B1/02H04B1/06
Inventor 郭勇高嵩王绪本谢兴红李志鹏钟晓玲赖武刚
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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