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Distance measuring device, measuring method thereof and actual distance measuring method

A technology of distance measurement and measurement method, which is applied in the field of actual distance measurement and distance measurement device, and can solve the problems of large size of equipment, long distance measurement time and poor dynamic performance.

Active Publication Date: 2016-01-27
合肥四相至新科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the above-mentioned existing dual-node active response ranging technology, the synchronization problem of sending and receiving between two devices is solved by using a fixed delay line or alternate sending and receiving technology between two devices. poor performance problem

Method used

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  • Distance measuring device, measuring method thereof and actual distance measuring method
  • Distance measuring device, measuring method thereof and actual distance measuring method
  • Distance measuring device, measuring method thereof and actual distance measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Such as figure 1 As shown, a distance measuring device includes an interrogator and a transponder,

[0068] The interrogator includes: a T / R assembly A, a modulation and demodulation module A, a baseband signal acquisition module A, a baseband signal generation module A, a controller A and a memory A connected to the controller A; the controller A has two baseband Signal input port and two baseband signal output ports, one baseband signal input port is used to receive I channel digital baseband signal, the other baseband signal input port is used to receive Q channel digital baseband signal, and one baseband signal output port is used to output I channel Digital baseband signal, another baseband signal output port is used for outputting Q channel digital baseband signal; Memory A is used for storing digital baseband signal, and this digital baseband signal comprises I channel digital baseband signal and Q channel digital baseband signal, and this digital baseband signal...

Embodiment 2

[0084] On the basis of Embodiment 1, the structure of the modulation and demodulation module is further described in this embodiment. The structure of the modulation and demodulation module A of the interrogator and the modulation and demodulation module B of the answering machine are the same: both include orthogonal local oscillators , a quadrature demodulation part and a quadrature modulation part, wherein the demodulation part includes two-way mixers, band-pass filters and amplifiers, the inputs of which are connected to the radio frequency signal outputs of the T / R components. The modulation section also includes two mixers, a bandpass filter and an adder whose output is connected to the RF signal input of the T / R component. The local oscillator input of the I-channel mixer of the quadrature demodulation part is the same as the local oscillator input of the I-channel mixer of the quadrature modulation part, and the local oscillator input of the Q-channel mixer of the quadr...

Embodiment 3

[0096] On the basis of Embodiment 2, the structure of the T / R assembly is further described in this embodiment. The T / R component is a basic component in a wireless communication system or a radar system. Its structure is usually composed of an antenna, a transceiver switch, a band-pass filter, a low-noise amplifier, and a power amplifier. The function of the T / R component is to transmit and receive radio frequency signals , the control signal for switching the transmitting and receiving states is given by the controller. In the present embodiment, the structure and connection mode of the T / R assembly A of the interrogator and the T / R assembly B of the answering machine are as follows:

[0097] Such as Figure 4 As shown, the T / R component A includes an antenna A, a transceiver switch A, a low noise amplifier LNA1, a power amplifier PA1, a band-pass filter BPF11, and a band-pass filter BPF12; the transceiver switch A is connected to the antenna A for controlling the radio fre...

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Abstract

The invention discloses a distance measuring device, a measuring method thereof and an actual distance measuring method. The device comprises an interrogator and a responder. The interrogator and the responder individually comprises a T / R assembly, a modulation-demodulation module, a baseband signal acquisition module, a baseband signal generation module, a controller and a memory connected with the controller. The modulation-demodulation module is connected with the T / R assembly. The baseband signal acquisition module and the baseband signal generation module are respectively connected between the modulation-demodulation module and the controller. The responder further comprises an envelope detector. An input end of the envelope detector is connected with the modulation-demodulation module, and an output end is connected with the controller. The controller of the responder is provided with a delay time preset module. In the distance measuring process, a clock synchronization problem of the interrogator and the responder is avoided, and the precision of distance measurement is high; in addition, the time delay length for signal forwarding of the responder can be flexibly controlled, different responders are distinguished by different time delays, and the high dynamic performance is easily maintained under the condition of a larger number of responders.

Description

technical field [0001] The invention relates to a distance measurement technology, in particular to a distance measurement device based on an active response, a measurement method thereof, and an actual distance measurement method. Background technique [0002] Distance measurement technology is a basic measurement technology, widely used in human daily life, and its measurement accuracy is a very important indicator, especially in the monitoring of geological disasters such as slope collapse, landslide, debris flow, etc., often requires extremely high distance measurement accuracy . Although optical ranging instruments such as total stations and levels have high ranging accuracy, they have not been widely used in geological disaster monitoring. The reason is that these optical instruments cannot be used normally in severe weather environments. These instruments are expensive and cannot realize automatic control measurement. At present, there is no mature geological disast...

Claims

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Application Information

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IPC IPC(8): G01S11/02
CPCG01S11/02
Inventor 陈祝明陈健
Owner 合肥四相至新科技有限公司
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