Electronic levelling instrument

An electronic level and processing circuit technology, applied in the field of measurement, can solve the problems of not being suitable for high-precision measurement level, precision measurement, low sensitivity, etc., and achieve significant social and economic benefits, simple structure, and high measurement sensitivity.

Inactive Publication Date: 2003-04-30
TIANJIN UNIV
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent application No. 86202257 discloses an electronic level, but the precision of this level is low
In order to improve the measurement accuracy, some electronic levels use whether the pendulum vertical line is in contact with two horizontal bodies to measure the level or verticality. For example, Chinese patent application No. 89206956.2 discloses an electronic level. This level is only tilted to a certain level. Gives a music alarm signal when the level is low, and cannot be used for precision measurement
At present, capacitive sensors are used in most engineering measurements, such as the ADXL50 acceleration sensor produced by Analog Device Inc. in the United States. This sensor integrates the sensor and signal conditioning circuit on one chip, which is small in size, resistant to shock, and easy to use. ; But the sensitivity of the electronic level meter composed of this kind of sensor is often low, which cannot meet the needs of high-precision measurement level

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
  • Electronic levelling instrument
  • Electronic levelling instrument
  • Electronic levelling instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Below in conjunction with accompanying drawing, the implementation of the present invention is described in detail as follows:

[0020] exist figure 1 Among them, the capacitive sensor 1 is composed of a group of fixed fixed pieces 2 and moving pieces 4; the fixed piece 2 is made of a fan-shaped metal sheet in a rhomboid or other shape; the moving piece 4 is made of a group of fan-shaped metal sheets in a fan-shaped Be shaped on the center hole that matches with shaft 3, and the center hole place is contained on the shaft 3. When the fixed piece 2 and the matching device of the moving piece 4, its two planes should be absolutely parallel. The fixed piece 2 and the moving piece 4 can be made by punching copper, aluminum or other metal materials.

[0021] exist figure 2 Among them, the capacitive sensor 1 is composed of two sets of fan-shaped metal sheets with fixed intervals to form the fixed piece 2; The fixed piece 2, and the moving piece 4, its shape, structure, ...

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

An electronic level consists of a capacitive sensor and a measurement processor circuit. A sensor measuring circuit, an A/D conversion circuit, CPU and a LCD display are connected in series in the measurement processor circuit. A capacitance/frequency conversion circuit, the CPU and the LCD display are connected in series. The invention possesses the features as follows. (1) Capacitance is used as the sensor for measuring level, providing the high measuring accuracy with simple structure. (2) The measurement processor circuit with simple structure of the circuit is adopted, providing high sensitivity with cheap component. (3) The entire structure is simple so that the products are easy to be manufactured. The electronic level can be utilized in large-scale or precise engineering.

Description

technical field [0001] The invention belongs to the category of measurement, and in particular relates to a level sensor and a level. Background technique [0002] The spirit level is a kind of measuring instrument for measuring the level. It is widely used in large-scale projects or precision projects such as buildings, rocket launch platforms, and bridges. At present, the commonly used sensor in the spirit level is a water bubble sensor. Chinese patent application No. 86202257 discloses an electronic level, but the precision of this level is low. In order to improve the measurement accuracy, some electronic levels use whether the pendulum vertical line is in contact with two horizontal bodies to measure the level or verticality. For example, Chinese patent application No. 89206956.2 discloses an electronic level. This level is only tilted to a certain level. It will give a music alarm signal when the level is high, and it cannot be used for pr...

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): G01C9/06
Inventor 林凌李刚
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap