Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Universal micro electromechanical system (MEMS) pedometer and step counting method

A system pedometer and micro-electromechanical technology, applied in the direction of instruments, measuring devices, surveying and navigation, etc., can solve the problems of easy damage, low step counting accuracy, and large pedometer size, and achieve strong adaptability and long battery life. Ultra-long, simple and reliable circuit effect

Inactive Publication Date: 2013-06-12
HARBIN ENG UNIV
View PDF4 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of the existing pedometers with large volume, low step counting accuracy and easy damage, and provide a general MEMS pedometer and a step counting method

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
  • Universal micro electromechanical system (MEMS) pedometer and step counting method
  • Universal micro electromechanical system (MEMS) pedometer and step counting method
  • Universal micro electromechanical system (MEMS) pedometer and step counting method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0028] Specific implementation mode one: the following combination figure 1 Describe the present embodiment, the universal MEMS pedometer described in the present embodiment is characterized in that it comprises a single-chip microcomputer 1, a MEMS three-axis acceleration sensor 2 and a segment liquid crystal display 3,

[0029] Single-chip microcomputer 1 comprises FIR digital low-pass filter module 1-1, data processing module 1-2 and display control module 1-3,

[0030] The MEMS three-axis acceleration sensor 2 is used to collect the acceleration when the pedometer is walking, and the acceleration signal of the MEMS three-axis acceleration sensor 2 is input to the FIR digital low-pass filter module 1-1 through the SPI interface, and the FIR digital low-pass filter module 1- The filter signal output end of 1 is connected to the acquisition data signal input end of the data processing module 1-2, and the step counting signal output end of the data processing module 1-2 is con...

specific Embodiment approach 2

[0034] Specific implementation mode two: the following combination figure 1 Illustrate this embodiment, this embodiment will further explain Embodiment 1, this embodiment also includes battery power supply system 4 and power monitoring display 5, and battery power supply system 4 is used for single-chip microcomputer 1, MEMS three-axis acceleration sensor 2 and segment type liquid crystal The display 3 provides working power, and the power signal output terminal of the battery power supply system 4 is connected to the power signal input terminal of the power monitoring display 5 .

[0035] The power supply monitoring display 5 is not only used for displaying the power state of the battery-powered system 4, but also can monitor whether the battery-powered system 4 is working normally.

specific Embodiment approach 3

[0036] Embodiment 3: This embodiment further describes Embodiment 1 or 2. The model of the single-chip microcomputer 1 in this embodiment is MSP430.

[0037] The single-chip microcomputer 1 described in this embodiment adopts the 16-bit ultra-low power consumption single-chip microcomputer MSP430F4152 released by TI Company, which has 16KB Flash, 512B RAM and many peripherals, and the current is only 0.9uA in the low power consumption mode. It has 48 I / O ports, a temperature sensor and a practical timer that can be flexibly configured. It has 2 USARTs supporting I2C and SPI bus interfaces, which can communicate with the acceleration sensor LIS3DH; it can directly drive up to 144-segment LCD; and there are 8 channels of 10-bit AD converters to monitor the battery voltage.

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 universal micro electromechanical system (MEMS) pedometer and a step counting method, and belongs to the field of electronic step counting technology. The invention aims to solve the problems that conventional pedometers are large in size, low in step counting precision and easily destroyed. A MEMS three-axis acceleration sensor of the universal MEMS pedometer is used for collecting an accelerated speed of a man whose steps are counted during walking; the acceleration signal of the MEMS three-axis acceleration sensor is input to a finite impulse response (FIR) digital low-pass filter module through a serial peripheral interface (SPI); the filtering signal output end of the FIR digital low-pass filter module is connected with a collected data signal input end; a step counting signal output end of a data processing module is connected with a step counting control signal input end of a display control module; and a display control signal output end of the display control module is connected with a display signal input end of a section type liquid crystal display. The step counting method comprises steps of collecting data, detecting peak values, detecting effective axes and determining. The universal MEMS pedometer and the step counting method are used for counting steps.

Description

technical field [0001] The invention relates to a general microelectromechanical system pedometer and a pedometer method, belonging to the technical field of electronic pedometers. Background technique [0002] A pedometer is a monitor that monitors the amount of daily activity, which can motivate people to exercise and enhance their physical fitness. Early pedometers used a weighted mechanical switch to detect steps and had a simple counter. This kind of pedometer was large in size and weight, and the accuracy of step counting was not high and it was easily damaged. With the wide application of single-chip technology and the rapid development of integrated circuit (IC) process technology, the conditions for the application of micro-electro-mechanical systems (MEMS), a new technology, to miniaturized equipment have become more and more mature. The digitization of pacing laid the foundation. [0003] MEMS belongs to the new field of interdisciplinary, and it is a technology...

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): G01C22/00
Inventor 高伟李海军王国臣陈世同王罡于强夏秀玮
Owner HARBIN ENG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com