Non-contact running vehicle acceleration measuring method
A non-contact technology for acceleration measurement, applied in speed/acceleration/shock measurement, acceleration measurement, measurement devices, etc., can solve the problems of high cost of microwave radar, poor environmental adaptability, poor accuracy, etc., to improve environmental adaptability , Improve measurement accuracy and reduce measurement cost
Inactive Publication Date: 2020-08-21
WUHAN TURBO TECH
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Problems solved by technology
[0009] The purpose of the present invention is to propose a new method using microwave radar to solve the problems of high cost, poor precision and poor environmental adaptability of non-contact measurement acceleration
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[0045] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.
[0046] The microwave radar schematic diagram that the present invention adopts is as figure 1 As shown, among them, LNA is a low-noise amplifier, IF is an intermediate frequency signal, ADC is an analog-to-digital converter, and PA is a power amplifier. for the mixer.
[0047] A method for measuring the acceleration of a non-contact driving vehicle, comprising the following steps:
[0048] Step 1, the present invention adopts the microwave radar capable of transmitting single-frequency continuous wave and frequency-modulated continuous wave, and at T1 moment, first measures the Doppler velocity v of the target with single-frequency continuous wave d , and then use FM continuous wave to measure...
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The invention discloses a non-contact running vehicle acceleration measuring method. Firstly, a microwave radar capable of emitting single-frequency continuous waves and frequency-modulated continuouswaves is adopted, at the moment T1, the Doppler speed vd of a target is measured through the single-frequency continuous waves, and then the distance D of the target is measured through the frequency-modulated continuous waves; an included angle between the target motion direction and the microwave radar beam direction can be calculated according to the installation height H and the distance D ofa microwave radar; and step 3, the real speed v1 of the target at the moment T1 is calculated according to the included angle theta; and the real speed v2 of the target at the T2 moment is calculatedaccording to the method, and the acceleration is calculated according to the speeds at the T1 moment and the T2 moment. The acceleration is measured and calculated in a high-precision mode through the thunder wave radar, the acceleration measuring cost is greatly reduced, the measuring precision is improved, the environment adaptability is improved, and the influence of rain, fog, haze, strong light and other environment factors on a laser head can be effectively coped with.
Description
technical field [0001] The invention belongs to the technical field of radar, and relates to an acceleration measurement method, in particular to a non-contact vehicle acceleration measurement method. Background technique [0002] There are many ways to measure acceleration. Non-contact acceleration measurement is more difficult. The existing non-contact acceleration measurement mainly relies on laser technology, using laser to measure distance, and measuring the speed and acceleration of the target through multiple measurements at a fixed time. [0003] The existing laser measurement of acceleration not only has the problems of high equipment cost and large deviation of measurement acceleration, but also has poor adaptability to the environment. [0004] Reasons for the high cost of laser technology: [0005] 1. The cost of the laser device itself is high; 2. In order to measure the acceleration, two or more laser heads must be used for detection. [0006] Reasons for ina...
Claims
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Login to View More IPC IPC(8): G01P15/16G01S13/58G01S13/92G01S13/91
CPCG01P15/16G01S13/584G01S13/92G01S13/91
Inventor 陈瑞刘景顺何辉胡志勇褚兆飞
Owner WUHAN TURBO TECH