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Microwave geodimeter

A microwave range finder and transmitter technology, which is applied in radio wave measurement systems, instruments, measurement devices, etc., can solve the problems of low ranging accuracy and achieve high resolution.

Inactive Publication Date: 2010-02-17
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the traditional pulse radar object distance measuring instrument is calculated by direct time difference, its ranging accuracy is relatively low
Although the method of front and back wave gates has been used to improve the accuracy, it can only achieve medium-precision measurement.

Method used

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Embodiment Construction

[0022] see figure 1 , the present invention includes a transmitting device, a receiving device and a signal processing device. The transmitting device is provided with a first clock signal generator 1 , a second clock signal generator 11 , a pulse generator 2 , a local oscillator 3 , a switch 4 , a power amplifier 5 , a loop coupler 6 and an antenna 7 . The input terminal of the pulse generator 2 is connected to the output terminal of the first clock signal generator, the input signal terminal of the switch is respectively connected to the output terminal of the local oscillator used to generate the microwave frequency signal and the output terminal of the pulse generator 2, and the output terminal of the switch 4 One of the output signal terminals is connected to the input terminal of the power amplifier 5 , and the other one is connected to the receiving / transmitting switch unit 9 . The input end of the ring coupler 6 is connected to the output end of the power amplifier, a...

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Abstract

A microwave geodimeter relates to a distance measuring device, in particular to a high-accuracy noncontact distance measuring device with microwave method, mainly suitable for measuring material leveror liquid lever in containers or storehouses in industrial production engineering. The invention provides a microwave geodimeter which can realize a high-resolution distance measuring by using the prior electric elements. The invention comprises a transmitting device, a receiving device and a signal processing device. The transmitting device is provided with a first clock signal generator, a second clock signal generator, a pulse generator, a local oscillator, a switch, a power amplifier, a ring coupled circuit and an antenna. The receiving device is provided with an antenna, a ring coupled circuit and a low-noise amplifier; the input of the low-noise amplifier is connected with the output of the ring coupled circuit of the receiving device. The signal processing device is provided with areceiving / transmitting switch unit, a filter, a second clock signal generator, a pulse generator, a sampling smoothing circuit, a peak value testing circuit, a microprocessor and a display device.

Description

technical field [0001] The invention relates to a distance measuring device, in particular to a high-precision non-contact distance measuring device which is mainly suitable for the material level and liquid level of containers or storage bins in industrial production engineering and adopts microwave method. Background technique [0002] Radar ranging is a non-contact method that can accurately measure the relative distance between two points. It transmits microwaves through the antenna. After encountering the target to be measured, the microwaves are reflected and received by the receiving antenna, and then pass a certain signal. The processing method is used to solve the problem and obtain the distance to be measured. This measurement technology can measure distances from a few millimeters to thousands of meters; some distance measurement accuracy has reached the order of millimeters; and some measurement speeds can reach the order of microseconds. Due to the above-mentio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/10G01S13/26G01F23/284
Inventor 郭东辉陈华君
Owner XIAMEN UNIV
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