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GA/T 1727-2020: Calibration specifications for speedmeter of photoelectric screen target
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Calibration specifications for speedmeter of photoelectric screen target
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GA/T 1727-2020
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PDF similar to GA/T 1727-2020
Standard similar to GA/T 1727-2020 GB/T 2828.1 GB/T 8170 GB/T 4854.4 Basic data | Standard ID | GA/T 1727-2020 (GA/T1727-2020) | | Description (Translated English) | Calibration specifications for speedmeter of photoelectric screen target | | Sector / Industry | Public Security (Police) Industry Standard (Recommended) | | Classification of Chinese Standard | A42 | | Classification of International Standard | 17.220.20 | | Word Count Estimation | 26,258 | | Date of Issue | 2020-05-13 | | Date of Implementation | 2020-08-01 | | Issuing agency(ies) | Ministry of Public Security | GA/T 1727-2020: Calibration specifications for speedmeter of photoelectric screen target---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration specifications for speedmeter of photoelectrc screen target
ICS 17:220:20
A42
Public Safety Industry Standards of the People's Republic of China
Calibration specification for light curtain target speedometer
2020-05-13 release
2020-08-01 Implementation
Issued by the Ministry of Public Security of the People's Republic of China
Table of contents
Preface Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Basic requirements 1
4:1 Structure 1
4:2 Principle 2
5 Measurement performance requirements 2
5:1 The perpendicularity between the detection surface of the light curtain target and the worktable surface 2
5:2 The perpendicularity between the extension line of the launch tube axis of the flying object launcher and the detection surface of the light curtain target 2
5:3 Target range 2
5:4 Speed measurement range 2
5:5 Speed measurement error 3
6 Calibration conditions 3
6:1 Environmental conditions 3
6:2 Measuring standards and other equipment 3
7 Calibration items and calibration methods 4
7:1 Calibration item 4
7:2 Calibration method 5
8 Expression of calibration results 8
9 Recalibration interval 9
Appendix A (informative appendix) Calibration record of light curtain target speedometer and the format of the inner page of the certificate (recommended) 10
Appendix B (informative appendix) Evaluation example of measurement uncertainty 12
Reference 20
Foreword
This standard was drafted in accordance with the rules given in GB/T 1:1-2009:
This standard was proposed and managed by the Technical Committee for Standardization of Social and Public Security Applications of the Ministry of Public Security:
The main drafting organizations of this standard: the First Research Institute of the Ministry of Public Security, the Ministry of Public Security Security and Police Electronic Product Quality Inspection Center (Beijing), Xi'an
University of Technology, Wuxi Haina Optoelectronics Information Technology Co:, Ltd:
The main drafters of this standard: Wang Min, Hu Zhiang, Qiu Rixiang, Wang Ailing, Xi Xiaolei, Liu Fei, Zhang Bao, Tian Hui, Lan Yan, Ni Jinping, Wu Pengcheng,
Chen Jianguo, Hu Jia, Zhang Yanjun, Chen Jing, Wang Fan, Cai Rongli:
Calibration specification for light curtain target speedometer
1 Scope
This standard specifies the measurement performance, calibration method, calibration result expression and recalibration of bullet speedometers using the principle of light curtain target speed measurement
time:
This standard applies to the calibration of light curtain target speedometers that measure the speed of flying objects (including projectiles):
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article
Pieces: For undated references, the latest version (including all amendments) applies to this document:
GB/T 28800 Airsoft bullet
GB/T 28801 air gun
GJB3196:30A bullet test method part 30: speed test light curtain target method
GA 141 police body armor
GA 293 police bulletproof helmet and face shield
GA/T 953 Forensic Science Muzzle Specific Kinetic Energy Velocimeter Method Test Regulation
GA/T 1488 General Technical Requirements for Forensic Science Bullet Speedometer
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
Photoelectricscreentarget
A photodetector that uses an artificial light source to form a light curtain: Generally consists of light source emitting parts, receiving parts, support frame, amplifying circuit and power supply
composition:
3:2
Light curtain target detection surface testingsurfaceofphotoelectricscreentarget
The light beam starts from the emitting part of the light curtain target and reaches the detection light curtain formed by the termination of the receiving part:
3:3
Distancebetweentargets
The distance between the detection surfaces of two light curtain targets placed parallel to each other:
4 Basic requirements
4:1 Structure
The light curtain target velocimeter (hereinafter referred to as the velocimeter) uses a light curtain target as a detector to measure various flying objects with a diameter of 4 mm to 20 mm:
An instrument that moves the speed of objects (including projectiles): It is mainly composed of two or more light curtain targets, a time measurement unit, and a calculation display unit: The structure is shown in Figure 1:
Shown:
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