Unlock instant, AI-driven research and patent intelligence for your innovation.

Time-difference ultrasonic flowmeter

An ultrasonic and flowmeter technology, applied in the measurement of flow/mass flow, liquid/fluid solid measurement, measurement devices, etc., can solve the problems of low accuracy, rarely used multi-pulse method, poor anti-interference ability, etc. The effect of improving stability and reliability

Inactive Publication Date: 2015-03-25
郭琳
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The time difference method can be subdivided into single-pulse and multi-pulse methods. At present, due to the limitation of traditional design ideas, the multi-pulse method is rarely used
However, there are some problems in the existing single-pulse ultrasonic flowmeter, such as: low precision, poor anti-interference ability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Time-difference ultrasonic flowmeter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] As shown in the figure, the present invention includes an MCU module, a CPLD module, a time-to-digital conversion module, an ultrasonic transceiver module and an input-output module, and the MCU module is connected to the LCD module and the input-output module respectively; the CPLD module is respectively connected to the time-to-digital conversion module and the ultrasonic transceiver The modules are connected; the MCU module is connected with the CPLD module.

[0012] The input and output modules include keyboards.

[0013] Adopt ispLSI1032.

[0014] Using ispLSI1032 (referred to as 1032), complete the synchronization of the system clock signal, digital monostable trigger, ultrasonic decoupling pulse counter, 316 ~ 5V level conversion and other work. The digital time conversion module is crucial to the entire measurement system. TDCGP2 (GP2 for short) has high precision, small package, high-speed pulse generator, stop signal enable, temperature measurement an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a time-difference ultrasonic flowmeter and relates to improvement of ultrasonic flowmeters. The time-difference ultrasonic flowmeter which is high in precision and anti-jamming capability comprises an MCU (micro control unit) module, a CPLD (complex programmable logic device) module, a time-to-digital conversion module, an ultrasonic transceiving module and an input-output module. The time-difference ultrasonic flowmeter is structurally characterized in that the MCU module is connected with an LCD (liquid crystal display) module and the input-output module; the CPLD module is connected with the time-to-digital conversion module and the ultrasonic transceiving module; the MCU module is connected with the CPLD module.

Description

technical field [0001] The present invention relates to the improvement of ultrasonic flowmeter. Background technique [0002] Ultrasonic flowmeter has the characteristics of no disturbance of flow field, no moving parts, no pressure loss, stable and reliable performance, wide measurement range, etc., and is widely used in the measurement of liquid and gas. Ultrasonic flow measurement is divided into time difference method, Doppler effect method, correlation method, noise method, beam shift method, etc. according to the principle, among which time difference method is the most widely used. The time-of-flight method can be subdivided into single-pulse and multi-pulse methods. At present, due to the limitation of traditional design ideas, multi-pulse methods are rarely used. But the existing single-pulse ultrasonic flowmeter has some problems, such as: low precision and poor anti-interference ability. Contents of the invention [0003] The present invention aims at the abo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/66
Inventor 郭琳戴文山王明
Owner 郭琳