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Ranging equipment based on FMCW radar signal processing and ranging algorithm thereof

A technology of radar signal processing and ranging equipment, which is applied in measuring devices, radio wave measuring systems, radio wave reflection/re-radiation, etc., can solve problems such as the influence of ranging accuracy, noise interference, and susceptibility to interference, and achieve Improved accuracy and stability, high accuracy and reliability, and effects of avoiding noise interference

Pending Publication Date: 2019-02-22
中交一公局重庆城市建设发展有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

During the construction of the tunnel, there is a lot of dust, and the infrared or laser is easily interfered, resulting in inaccurate distance measurement and false alarms of distance measurement.
FMCW, that is, linear frequency modulated continuous wave, FMCW radar based on electromagnetic wave reflection characteristics can safely and accurately perform distance measurement in complex environments, but the existing ranging equipment based on FMCW radar signal processing will be damaged during the amplification process of the radar output signal There is noise interference, which affects the accuracy and stability of signal processing, and has a great impact on the accuracy of ranging

Method used

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  • Ranging equipment based on FMCW radar signal processing and ranging algorithm thereof
  • Ranging equipment based on FMCW radar signal processing and ranging algorithm thereof
  • Ranging equipment based on FMCW radar signal processing and ranging algorithm thereof

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Embodiment Construction

[0049] Regarding the aforementioned and other technical contents, features and effects of the present invention, refer to the appended figure 1 to attach Figure 5 It will be apparent from the detailed description of the embodiments. The structural contents mentioned in the following embodiments are all based on the accompanying drawings of the description.

[0050] Such as figure 1 As shown, the ranging equipment based on FMCW radar signal processing includes radar, signal processing module and processor. The radar adopts the integrated transceiver chip of model BGT24MTR11. BGT24MTR11 integrates transmitter and mixer inside, which can realize the conversion of radar transceiver Function, the processor uses ST's STM32F407 chip, and the STM32F407 chip comes with a 12-bit A / D converter. Due to the A / D sampling rate configuration problem of the STM32F407, the A / D sampling rate of the product is 72.19KHz.

[0051] Such as figure 2 As shown, the signal processing module includes...

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Abstract

The invention discloses ranging equipment based on FMCW radar signal processing and a ranging algorithm thereof. The ranging equipment comprises a radar, a signal processing module and a processor, wherein the signal processing module comprises a filtering and amplifying circuit, a signal stabilization circuit and an output adjusting circuit, an input end of the filtering and amplifying circuit isconnected with a signal output end of the radar, an output end of the filtering and amplifying circuit is connected with an input end of the signal stabilization circuit, an output end of the signalstabilization circuit is connected with an input end of the output adjusting circuit, and an output end of the output adjusting circuit is connected with a signal input end of the processor. The ranging equipment completes distance detection based on FMCW radar signal processing, output signals of the radar are processed by means of the signal processing module, the precision and stability of thesignal are greatly improved, and the processor completes the acquisition of the output signals of the signal processing module and executes the precise and efficient algorithm, so as to calculate a target distance, thus the ranging result has high precision and reliability.

Description

technical field [0001] The invention relates to the technical field of radar distance measurement, in particular to a distance measurement device and a distance measurement algorithm based on FMCW radar signal processing. Background technique [0002] The safety step test equipment is a kind of equipment used to measure the depth of the tunnel during the tunnel construction process. The equipment used to measure the depth of the tunnel in the market generally uses infrared or laser ranging. During the construction of the tunnel, there is a lot of dust, and the infrared or laser is easily interfered, resulting in inaccurate distance measurement and false alarms of distance measurement. FMCW, that is, linear frequency modulated continuous wave, FMCW radar based on electromagnetic wave reflection characteristics can safely and accurately perform distance measurement in complex environments, but the existing ranging equipment based on FMCW radar signal processing will be damaged...

Claims

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Application Information

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IPC IPC(8): G01S13/34G01S7/41
CPCG01S7/41G01S13/34
Inventor 王平安潘江元宋国军梁家辉刘鸿星李贵程
Owner 中交一公局重庆城市建设发展有限公司
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