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JJF 1576-2016 English PDF (JJF1576-2016)

JJF 1576-2016 English PDF (JJF1576-2016)

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JJF 1576-2016: Program of Pattern Evaluation of Infrared Devices for Instant Screening of Human Skin Temperature

This program is applicable to the pattern evaluation of infrared devices for instant screening of human skin temperature. It is also applicable for the quality supervision and inspection of its product.
JJF 1576-2016
METEOROLOGICAL TECHNICAL STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
Program of pattern evaluation of infrared devices for
instant screening of human skin temperature
ISSUED ON: JUNE 27, 2016
IMPLEMENTED ON: SEPTEMBER 27, 2016
Issued by: General Administration of Quality Supervision, Inspection and Quarantine
Table of Contents
Introduction ... 6
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 7
4 Overview ... 8
5 Legal management requirements ... 8
5.1 Requirements for measurement units ... 8
5.2 External structure ... 8
5.3 Marking ... 8
6 Metering requirements ... 9
6.1 Resolution ... 9
6.2 Temperature display range ... 9
6.3 Laboratory error... 9
6.4 Alert response time ... 9
7 General technical requirements ... 9
7.1 Appearance and structure ... 9
7.2 Mode ... 10
7.3 Alert function ... 10
7.4 Consistency of temperature measurement (applicable to thermal imaging screening instrument) ... 10
7.5 Environmental test requirements ... 10
8 Pattern evaluation item ... 11
9 Submitted technical information and test prototype ... 12
9.1 Technical data requirements ... 12
9.2 Number of prototypes submitted ... 12
9.3 How to use the prototype ... 12
10 Test methods and conditions of test items, data processing, qualification criteria ... 12
10.1 Resolution test... 12
10.2 Test of temperature display range ... 13
10.3 Laboratory error 1 ... 14
10.4 Laboratory error 2 ... 15
10.5 Test of alert response time ... 16
10.6 Warning function test ... 17
10.7 Test of temperature measurement consistency ... 18
10.8 Test for storage and transportation environment ... 18
10.9 Impact test ... 19
10.10 Vibration test ... 20
10.11 Fall test ... 21
10.12 Electrical safety test ... 22
10.13 Electromagnetic compatibility test ... 22
10.14 Judgment of pattern evaluation results ... 23
11 Table of measuring instruments and equipment used for test items ... 23 12 Format of pattern evaluation record ... 25
Program of pattern evaluation of infrared devices for
instant screening of human skin temperature
1 Scope
This program is applicable to the pattern evaluation of infrared devices for instant screening of human skin temperature (hereinafter referred to as screening instrument). It is also applicable for the quality supervision and inspection of its product.
2 Normative references
The program cited the following documents:
JJF 1015-2014 General norm for pattern evaluation of measuring
instruments
JJF 1107-2003 Calibration specification of infrared thermometers for
measurement of human temperature
JJF 1187-2008 Calibration specification for thermal imagers
GB 9706.1-2007 Medical electrical equipment - Part 1: General
requirements for safety
GB/T 18268-2000 Electrical equipment for measurement, control and
laboratory use - EMC requirements
GB/T 19146-2010 Infrared devices for instant screening of human skin
temperature
For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard.
3 Terms and definitions
The terms and definitions defined in JJF 1107-2003 and GB/T 19146-2010 as well as the following terms and definitions apply to this code.
3.1
7.1.4 The function keys of the screening instrument shall have clear marks and instructions.
7.2 Mode
7.2.1 The screening instrument shall have a body temperature mode and
indicate the set display mode.
7.2.2 The calibration mode of the screening instrument shall be directly set or obtained through the conversion technique of body temperature mode.
7.3 Alert function
When the display of the screening instrument after measurement reaches or exceeds the alert temperature value, it shall be able to immediately emit alert such as lights, sounds or on-screen instructions.
7.4 Consistency of temperature measurement (applicable to
thermal imaging screening instrument)
The temperature measurement consistency of the screening instrument shall not exceed ?? 0.2??C.
7.5 Environmental test requirements
7.5.1 Storage and transportation environment
The screening instrument is in a packaged state. It is respectively placed in an environmental test chamber -- temperature is -20??C, relative humidity is less than 50% -- for 7 d; and in an environmental test chamber -- temperature is 50??C, relative humidity is not less than 75%, no condensation -- for 7 d. At the end of each storage period and after returning to room temperature for 2 h, make measurement. The laboratory error of the screening instrument shall meet the requirements of 6.3.
7.5.2 Mechanical environment
The test conditions of the mechanical environment of the screening instrument shall meet the requirements of Table 1. After the test, the laboratory error of the screening instrument shall meet the requirements of 6.3.
9 Submitted technical information and test prototype
9.1 Technical data requirements
The technical information submitted by the applicant shall meet the
requirements of Chapter 4 of JJF 1015-2014.
9.2 Number of prototypes submitted
The applicant shall provide a test prototype which shall pass the exit-factory inspection.
For applications based on a single product, in general, the number of test prototypes is 3.
For applications based on a series of products, in general, randomly take 1/3 representative products from the series, meanwhile 3 prototypes are provided for each specification. The representative specifications shall be determined by the technical institution undertaking the test based on the technical documents provided by the applicant.
Generally, the product of different specifications with different optical paths, different types of main components or different technical indicators shall not be divided into the same series.
Under normal circumstances, the prototype will be sent by the applicant itself. 9.3 How to use the prototype
All test items shall be carried out on all prototypes. The prototype shall not be adjusted during the test or during the experiment.
10 Test methods and conditions of test items, data
processing, qualification criteria
10.1 Resolution test
- Test purposes
Check whether the test prototype meets the requirements of 6.1.
If all single measurement results of a single prototype are qualified, then, the temperature display range of the prototype is qualified; otherwise it is unqualified.
10.3 Laboratory error 1
At the environmental conditions of temperature 24??C ~ 26??C and relative humidity 40% ~ 65%, perform the laboratory error test.
- Test purposes
Check whether the test prototype meets the requirements of 6.3.
- Test conditions
It shall meet the temperature and humidity requirements of Table 2 of GB/T 19146-2010.
- Test equipment
It shall meet the requirements of 6.2.1 in JJF 1107-2003.
- Test procedure
Respectively set the standard blackbody radiation source?€?s temperature at the point of the screening instrument?€?s measuring range?€?s lower-limit + 0.7??C, 33.0??C, 35.6??C, 37.0??C, and the point of the screening instrument?€?s measuring range?€?s higher-limit - 0.7??C.
For each prototype, perform 4 consecutive measurements of the standard
blackbody radiation source at each temperature point; the time interval between each measurement remains the same. Record the temperature
value displayed by the screening instrument for each measurement.
- Data processing
For each prototype, a single measurement determines the laboratory error: ei, j = ???ti, j - tBBi???, j = 1, 2, 3, 4, unit ??C.
Where:
tBBi - Standard blackbody radiation source?€?s temperature;
ti, j - The jth temperature indication value when the standard blackbody?€?s temperature tBBi is measured by the screening instrument;
j indicates the order of readings.
period, the standard blackbody radiation source is continuously measured 4 times; the interval between each measurement shall be consistent.
Record the temperature value displayed by the screening instrument for
each measurement.
- Data processing
Same as 10.3.
- Qualification criteria
If ei, j determined by single measurement of a single prototype meets the requirements of 6.3, then, the single measurement result is qualified;
otherwise, the single measurement result is unqualified.
If all single measurement results of a single prototype are qualified, then, the laboratory error measured by the prototype under the environmental
conditions specified in this clause is qualified; otherwise, it is unqualified. 10.5 Test of alert response time
- Test purposes
Check whether the test prototype meets the requirements of 6.4.
- Test conditions
Environmental conditions: It shall meet the requirements of 6.1 in GB/T 19146-2010.
- Test equipment
It shall meet the requirements of 6.2.1 in JJF 1107-2003. Meanwhile it is equipped with a timer and a light blocking plate.
- Test procedure
Set the standard blackbody radiation source to be 0.5??C higher than the calibration mode value corresponding to the alert temperature point of the screening instrument. Place the light barrier between the standard
blackbody radiation source and the screening instrument. Produce a
temperature step (excitation) by quickly removing the light barrier. Observe the measurement of the standard blackbody radiation source?€?s temperature by the screening instrument. Use a stopwatch to directly record the alert response time ??. Each prototype is measured 4 times.
- Qualification criteria
10.7 Test of temperature measurement consistency
- Test purposes
Check whether the test prototype meets the requirements of 7.4. This test item is only applicable to the prototype of the thermal imaging screening instrument.
- Test conditions
Environmental conditions: It shall meet the requirements of 6.1 in GB/T 19146-2010.
- Test equipment
It shall meet the requirements of 6.2.1 in JJF 1107-2003.
- Test procedure
Follow the requirements and steps of 6.5.4 in GB/T 19146-2010. For each prototype, determine the consistency ??n of the temperature measurement
results in different areas of the measurement field of view.
- Data processing
The consistency of temperature measurement is calculated by
Where:
??n - Temperature measurement consistency, ??C;
- The average value of temperature in the first area, ??C;
- The average value of temperature in the nth area, ??C. n = 2 ~ 5.
- Qualification criteria
If each prototype meets the requirements of 7.4, then, the consistency of temperature measurement is qualified; otherwise, it is unqualified.
10.8 Test for storage and transportation environment
- Test purposes
Environmental conditions: It shall meet the requirements of 6.1 in GB/T 19146-2010.
- Test equipment
It shall meet the requirements of 6.2.1 in JJF 1107-2003; meanwhile it is equipped with an impact test bench to meet the test requirements.
- Test procedure
Set the standard blackbody radiation source to the calibration mode value corresponding to the alert temperature point of the screening instrument. Each prototype is installed on the impact test bench (the impact test bench executes the parameters in Table 1). After the impact test, the standard blackbody radiation source is continuously measured 4 times; the interval between each measurement remains the same; record the displayed
temperature of the screening instrument for each measurement.
- Data processing
Same as 10.3.
- Qualification criteria
If ei, j determined by single measurement of a single prototype meets the requirements of 6.3, then, the single measurement result is qualified;
otherwise, the single measurement result is unqualified.
If all single measurement results of a single prototype are qualified, then, the impact test of the prototype is qualified; otherwise, it is unqualified. 10.10 Vibration test
- Test purposes
Check whether the test prototype meets the requirements of 7.5.2.
- Test conditions
Environmental conditions: It shall meet the requirements of 6.1 in GB/T 19146-2010.
- Test equipment
It shall meet the requirements of 6.2.1 in JJF 1107-2003. Meanwhile it is equipped with a vibration test bench that meets the test conditions.
measured 4 times; the interval between each measurement is kept the
same; record the temperature value displayed by the screening instrument for each measurement.
- Data processing
Same as 10.3.
- Qualification criteria
If ei, j determined by single measurement of a single prototype meets the requirements of 6.3, then, the single measurement result is qualified;
otherwise, the single measurement result is unqualified.
If all single measurement results of a single prototype are qualified, then, the fall test of the prototype is qualified; otherwise, it is unqualified. 10.12 Electrical safety test
- Test purposes
Check whether the prototype meets the requirements of 7.5.3.
- Test conditions
It shall meet the requirements of 18 f) in GB 9706.1-2007.
- Test equipment
It shall meet the requirements of 18 f) in GB 9706.1-2007.
- Test procedure
It is performed according to 18 f) of GB 9706.1-2007.
- Qualification criteria
The measurement results of the prototype meet the requirements of 7.5.3, then the electrical safety test of the prototype is qualified; otherwise it is unqualified.
10.13 Electromagnetic compatibility test
- Test purposes
Check whether the test prototype meets the requirements of 7.5.4.

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