Portal 24 GHz continuous wave human body life detection instrument

Abstract

The invention discloses a portal 24 GHz continuous wave human body life detection instrument. The portal 24 GHz continuous wave human body life detection instrument comprises a transmitter, a transmitting antenna connected with the transmitter, a receiver front end, a receiving antenna connected with the receiver front end, an AD converter, an analog signal conditioning circuit module in front of the AD converter, a digital signal processor behind the AD converter, a display terminal and a DC / DC power supply module used for supplying power through a portable power source. A K-LC2 radar detection instrument module is adopted in the transmitter, the transmitting antenna connected with the transmitter, the receiver front end and the receiving antenna connected with the receiver front end. A programmable amplifier and a Butterworth filter are adopted in the analog signal conditioning circuit module. C8051f350 single-chip microcomputers are adopted in the AD converter and the digital signal processor behind the AD converter. The display terminal has the digital signal processing function. The DC / DC power supply module is connected with the K-LC2 radar detection instrument module, the analog signal conditioning circuit module and the C8051f350 single-chip microcomputers. The detection instrument is small in size, portable and low in cost.

Description

technical field [0001] The invention relates to a life detector, in particular to a portable 24GHz continuous wave human life detector, which is used for non-contact detection of human life signals. Background technique [0002] The non-contact human life detector is a detector that uses wireless electromagnetic waves to detect human vital signs. Compared with the traditional contact human life detector, this detector does not need to directly contact the human body such as electrodes to avoid discomfort to the human body, and is especially suitable for long-term monitoring of the vital signs of the elderly and children who do not move around. In addition, using the penetrability of electromagnetic waves, the existence of life can be detected through partition walls, and the detector can also be used for rescue such as firefighting and earthquakes. Therefore, since the 1970s, people have carried out a lot of research on the human body life detector. In order to avoid the s...

AI Technical Summary

Problems solved by technology

[0003] However, the current portable 24GHz human life detector has the following problems in terms of portability and practicability: (1) The 24GHz transceiver antenna adopts a specially customized method, which is large in size and high in cost

(2) 24bitADC is implemented with a dedicated independent ADC chip or acquisition card such as TexasInstrumentADS1251, which is costly and increases the complexity of integration

(3) The power supply is realized by a 220V transformer or a large-volume lithium battery, which cannot be truly portable and lightweight

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