SEMI International Standards
Standards New Activity Report Form (SNARF)
Date Prepared: Revised (if Applicable):

Document Number: 7104
SNARF for: New Standard: Test Method of Electromyography Sensing Technology of Flexible Hybrid Electronics and Electronic Textiles

Originating Global Technical Committee: Flexible Hybrid Electronics (FHE)
Originating TC Chapter: Taiwan
Task Force (TF) in which work is to be carried out: FHE System for Wearable Task Force
Note: If a new task force is needed, also submit a task force organization form (TFOF)

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1. Rationale:
a. Describe the need or problem addressed by this activity.
(Indicate the customer, what benefits they will receive, and if possible, quantify the impact on the return on investment [ROI] if the Document is implemented.)
In recent year, the signal of the human brain, heart and muscle are emphasized gradually for analyzing and recording the physiological signal, the signal of muscle can be recorded by the electromyography (EMG) that is better applicable to analyze the human health. Flexible Hybrid Electronics (FHE) and electronic textiles are the one of the appropriate choices to link the human body and the electronic sensors for sensing EMG signal. Therefore, FHE and electronic textiles are treated as the integrated substrate for mounting the electronic sensors, sensing and analyzing EMG signal. In order to constitute the efficient supply chain, test flows and align the various test methods, this test method aims to implement and elucidate the measurement and analysis of EMG signal.


b. Estimate effect on industry.
2: Major effect on an industry sector - identify the relevant sector
Sector or Company Information: This SNARF can be applied in wearable industries for flexible electronic development, testing and quality assurance

c. Estimate technical difficulty of the activity.
II: Some Difficulty - Disagreements on known requirements exist but developing consensus is possible

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2. Scope:
a: Describe the technical areas to be covered or addressed by this Document development activity. For Subordinate Standards, list common concepts or criteria that the Subordinate Standard inherits from the Primary Standard, as well as differences from the Primary Standard:
1.This SNARF recommends the EMG sensing technology and the measurement method to measure the physiological signal. The document will focus on defining the measurement, the procedure, the material, the evaluation and the report.
2.IEC 60601-2-47 standard has been cited, the basic conditioning of EMG sensing technology, the basic conditioning includes linearity and dynamic range, common mode rejection, gain accuracy etc. The above parameters are gain by the waveform and the frequency of EMG. In this SNARF, the waveform of EMG will be measured for analyzing the characteristic, this waveform characteristic is the key to calculate the frequency.
3.The document applied to the EMG measurement, this measurement includes (1) the standard source, (2) the experimental structure and (3) the signal analysis. The standard source can be performed as continuous signal input for completing the measurement method.
4.This document describes the experimental structure, that includes the specifications of the conductive traces, the touch materials and the signal sensor. The conductive traces are ensured the stable and smooth conduction of signal. Furthermore, the specifications of touch materials and the signal sensor are determined for embedding tightly into electronic textiles, and flat closely on the skin simultaneously.
5.This document provides the method of the signal analysis, this method is designed for processing the waveform of the EMG signal. Basically, the frequency of the EMG signal is extracted by the processed waveform.
This test method applies to define the overall module of the EMG measurement of electronic textiles.

b: Expected result of activity
New Standard or Safety Guideline (including replacement of an existing Standard or Safety Guideline)

For a new Subordinate Standard, identify the Primary Standard here:




For Standards, identify the Standard Subtype below:
Test Method

Miscellaneous (describe below):

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3. Projected Timetable for Completion:

a: General Milestones
a. Activity Start: 05/19/2023b. 1st Draft by: 04/01/2023
c. (Optional) Informational Ballot by: d. Letter Ballot by: 01/01/2024
e. TC Chapter Approval By:05/19/2023

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4. Liaisons with other Global Technical Committees/TC Chapters/Subcommittees/TFs:
a. List SEMI global technical committees, TC Chapters, subcommittees, or task forces in your or other Regions/Locales that should be kept informed regarding the progress of this activity. (Refer to SEMI Standards organization charts and global technical committee charters and scopes as needed.)


b. List any planned Type I Liaisons with external nonprofit organizations (e.g., SDO) that should receive Draft Documents from Standards staff for feedback during this activity and be notified when the Letter Ballot is issued (refer to Procedure Manual § 7):


c. Intercommittee Ballots:
will not be issued

Identify the recipient global technical committee(s):

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5. Safety Considerations:
The resulting document is expected:
NOT to be a Safety Guideline

NOTE FOR "to be a Safety Guideline": When all safety-related information is removed from the Document, the Document is NOT technically sound and complete - Refer to Section 15.1 of the Regulations for special procedures to be followed.

NOTE FOR "NOT to be a Safety Guideline": When all safety-related information is removed from the Document, the Document is still technically sound and complete.

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6. Intellectual Property Considerations:
Note: Both a: and b: below should be checked for Revision of existing Standard(s) and Safety Guideline(s).

a. For a new Standard or Safety Guideline and for any part to be modified or added in a Revision of published Standards and Safety Guidelines:
the use of patented technology is NOT required.

If "patented technology is intended to be included in the proposed Standard(s) or Safety Guideline(s) " is selected above, then also check one:


b. For Revision, Reapproval, Reinstatement, or Withdrawal of existing Standard(s) and Safety Guideline(s):
there is no known material patented technology necessary to use or implement the Standard(s) and Safety Guideline(s)

c. The body of the Document and any Appendices, Complementary Files, Related Information sections, or Various Materials that may or may not be a part of the Document by reference:
the incorporation of Copyrighted Item will NOT be required



NOTE FOR ‘the use of patented technology or the incorporation of Copyrighted Item(s) is NOT required’: If in the course of developing the Document, it is determined that the use of patented technology or Copyrighted Item(s) is necessary for the Document, the provisions of Regulations § 16 must be followed.

NOTE FOR ’will incorporate Copyrighted Item’: A copyright release letter must be obtained from the copyright owner prior to publication.

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7. Comments, Special Circumstances:
None.

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8. TC Member Review:
took place between (put dates below ) before approval at the TC Chapter Meeting, or

Member Review Start Date; 2023/4/12.
Member Review End Date: 2023/4/26

NOTE FOR ‘TC Member Review’ is required by the Regulations for a period of at least two weeks
before approval of a new, or a major revision of an existing, Standard or Safety Guideline. (Refer to Regulations ¶ 8.2.1)
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9. SNARF Approval Dates:
TC Chapter or GCS05/19/2023
Recorded in TC Minutes05/19/2023

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10. SNARF Extension Dates:
TC Chapter Extension Granted on
Extension Expires on