High-sensitivity stress sensing aggregate suitable for intelligent pavement

A high-sensitivity, stress-based technology, applied in the direction of the pad embedded in the road, the measurement of the property force of the piezoresistive material, the road, etc., can solve the problem that the contact effect cannot be accurately distinguished, and the particle force mode cannot be accurately analyzed. Stress propagation law, etc.

Pending Publication Date: 2020-09-08
CHANGAN UNIV
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Inside the structure of asphalt mixture pavement, the contact conditions between aggregate particles are divided into point-point contact, multi-point contact, point-surface contact, surface-surface contact and no contact. At present, the intelligent bone in the laboratory These contact effects cannot be accurately distinguished, and the particle force mode and stress propagation law cannot be accurately analyzed. That is to say, there are differences between the stress and strain measured by aggregates in the prior art and their actual force conditions.

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
  • High-sensitivity stress sensing aggregate suitable for intelligent pavement
  • High-sensitivity stress sensing aggregate suitable for intelligent pavement
  • High-sensitivity stress sensing aggregate suitable for intelligent pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] Such as figure 1 As shown, as a specific embodiment of the present invention, a high-sensitivity stress-sensing aggregate suitable for intelligent road surfaces includes an outer shell 1, a spherical stress-sensing layer 2, an inner protective shell 3, a wire 4, and a functional package Body 5, energy collection device 6, central processing unit 7, signal transmission module ...

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 discloses a high-sensitivity stress sensing aggregate suitable for an intelligent pavement. The high-sensitivity stress sensing aggregate comprise an outer shell, a spherical stress sensing layer is arranged in the outer shell in a matched mode. A plurality of piezoelectric patches coded according to spatial positions are uniformly distributed and arrayed on the outer surface of thespherical stress sensing layer; an inner protective shell is arranged in the spherical stress sensing layer in a matching manner; a functional packaging body is arranged in the inner protective shell;a central processing unit, a signal transmission module and a power supply module are arranged in the functional packaging body; wherein each piezoelectric patch is electrically connected with the central processing unit, the central processing unit is electrically connected with the signal transmission module, the power supply module is electrically connected with the central processing unit andthe signal transmission module, the central processing unit is used for converting electric signals of the piezoelectric patches into stress information, and the signal transmission module is used for sending the stress information to an external information receiving device. According to the invention, the contact effect between aggregate particles can be accurately distinguished, and the particle stress mode and the stress propagation rule can be accurately analyzed.

Description

technical field [0001] The invention belongs to the technical field of intelligent pavement self-perception and road performance monitoring, and in particular relates to a high-sensitivity stress-sensing aggregate suitable for intelligent pavement. Background technique [0002] Intelligent pavement is an important development direction of road construction technology in the future and the basis for the realization of intelligent transportation functions. In recent years, the intelligentization of high-grade highways through sensor empowerment has received widespread attention in the industry. Compared with traditional sensors, smart aggregates have good compatibility, and have the ability to monitor changes in pavement mechanical properties and other service performance without affecting the structural integrity of the pavement. As a multi-phase particle system, asphalt mixture has a very complex stress transfer law and internal particle stress mode under the action of traf...

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
IPC IPC(8): E01F11/00E01C7/18G08C17/02G01L1/18
CPCE01C7/182E01F11/00G01L1/18G08C17/02
Inventor 沙爱民李建阁蒋玮刘状壮贾猛卢震王文通袁东东
Owner CHANGAN 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