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Piezoelectric pulse sensor

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Contents

Introduction

It is a long life piezoelectric pulse sensor with signal filtering, conditioning and temperature compensation circuit. The high integration makes it very stable, reliable and extremely easy to use. It outputs the pulse wave which is voltage analog signal. It could be used in pulse wave analysis system, and even the Arduino based system.

Model: SEN42758M

Piezoelectric pulse sensor.jpg

Features

  • Output analog voltage signal
  • High sensitivity
  • Anti-jamming design
  • Wide overload range
  • Better consistency
  • Stable and reliable performance

Application Ideas

It can be used in pulse wave analysis systems (herbalist doctor pulse manifestation testing, non-invasive cardiovascular function testing system, pregnancy-induced hypertension syndrome testing system, etc). You can integrated it into the Arduino based system.

Cautions

The warnings and wrong operations possible cause dangerous.

Schematic

It is the schematic, the circuit about Eagle resource like .pdf should linked here in order to avoid memory exhausted.

Specifications

Structures

Piezoelectric pulse sensor-structure.jpg

Key specification

  • Voltage: 5~6VDC
  • Piezo range: -50~+300mmHg
  • Sensitivity: 2000 uV/mmHg
  • Temperature coefficient of sensitivity: 1×10-4/℃
  • Precision: 0.5%
  • Repeatability: 0.5%
  • Lagging: 0.5%
  • Max overload: 100 times

Output waveform

The typical output waveform of the pulse wave, which varies from person to person.

Piezoelectric pulse sensor-output waveform.jpg

The testing output wave form is shown as below.

Piezoelectric pulse sensor-real output waveform.jpg

Pin definition and Rating

Mechanic Dimensions

Usage

How to fix the pulse sensor? As shown below:

Piezoelectric pulse sensor-usage.jpg

Bill of Materials (BOM) /parts list

All the components used to produce the product.

FAQ

Please list your question here:

Support

If you have questions or other better design ideas, you can go to our forum or wish to discuss.

Version Tracker

Bug Tracker

Bug Tracker is the place you can publish any bugs you think you might have found during use. Please write down what you have to say, your answers will help us improve our products.

Additional Idea

The Additional Idea is the place to write your project ideas about this product, or other usages you've found. Or you can write them on Projects page.

Resources

How to buy

Click here to buy Piezoelectric pulse sensor on SEEED bazzar: http://www.seeedstudio.com/depot/piezoelectric-pulse-sensor-p-832.html?cPath=144_146&zenid=cee0a25bbc9ba561a121caf3e07d17a3

See Also

Other related products and resources.

Licensing

This documentation is licensed under the Creative Commons Attribution-ShareAlike License 3.0 Source code and libraries are licensed under GPL/LGPL, see source code files for details.

External Links

Links to external webpages which provide more application ideas, documents/datasheet or software libraries

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