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Double-comparer type ultrasonic distance measurer

A distance measuring device, ultrasonic technology, applied in the direction of measuring device, sound wave re-radiation, radio wave measurement system, etc., can solve problems such as hindering application, and achieve the effect of improving the technical level and expanding the application field

Inactive Publication Date: 2008-08-20
王建平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] At present, ultrasonic ranging has been applied in many fields, but the "dead zone" problem hinders its application in more fields

Method used

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  • Double-comparer type ultrasonic distance measurer
  • Double-comparer type ultrasonic distance measurer
  • Double-comparer type ultrasonic distance measurer

Examples

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Embodiment Construction

[0025] As shown in Figure 1, a kind of double comparator type ultrasonic distance measuring device of the present invention comprises single-chip computer 1, is connected with ultrasonic transmission drive circuit 2 on single-chip computer 1, and ultrasonic transmission drive circuit 2 is connected with ultrasonic transmission probe 3. The ultrasonic waves from the ultrasonic transmitting probe 3 are reflected by obstacles and received by the ultrasonic receiving probe 4, and are sent to a band-pass filter and amplifying circuit 5 by the ultrasonic receiving probe 4. The device 6 and the long-distance comparator 7, the short-distance comparator 6 and the long-distance comparator 7 are connected with the single-chip computer 1, and the single-chip computer 1 is connected with the display output circuit 8.

[0026] The operating principle of the device of the present invention is:

[0027] The ranging process is divided into two stages. When the timing time is less than the emis...

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Abstract

The invention discloses a double-comparator type ultrasonic wave distance measuring device, the device includes monoboard computer, the monoboard computer is connected with ultrasonic wave transmitting driving circuit, the ultrasonic wave transmitting driving circuit is connected with ultrasonic wave transmitting probe, when the ultrasonic wave of the ultrasonic wave probe reflects through barrier and is received by ultrasonic receiving probe, and is sent into a bandpass and amplifying circuit by ultrasonic wave receiving probe, bandpass and amplifying circuit are respectively connected with short distance comparator and long distance comparator, the short distance comparator and long distance comparator are respectively connected with singlechip, the singlechip is connected with display output circuit. The invention double comparator type ultrasonic wave distance measuring device solves the problem that the existing ultrasonic wave distance measuring technology has dead area, and is very important for improving ultrasonic wave distance measuring technology and extend application field.

Description

technical field [0001] The invention belongs to the technical field of automatic measurement and control and intelligent instruments and meters, and relates to a distance measuring device, in particular to a double comparator type ultrasonic distance measuring device. Background technique [0002] When the vibration frequency of the mechanical wave is in the range of 20Hz to 20kHz, it can cause the eardrum to vibrate and make people hear the sound. This wave is called audible sound wave; the mechanical wave below 20Hz is inaudible to the human ear and is called infrasound wave; The 20kHz mechanical wave is called ultrasound, and ultrasound cannot be heard by the human ear. [0003] The propagation speed of ultrasonic waves is related to the elastic coefficient, density and temperature of the medium. For liquids and gases, the propagation speed expression is: [0004] [0005] In the formula, V——ultrasonic propagation velocity; [0006] ρ - the density of the medium; ...

Claims

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Application Information

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IPC IPC(8): G01S7/52G01S15/08
Inventor 王建平
Owner 王建平
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