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GB/T 44174-2024: Performance requirements and testing methods for night vision system of passenger cars Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 44174-2024: Performance requirements and testing methods for night vision system of passenger cars---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT44174-2024 GB NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA ICS 43.040 CCS T 40 Performance requirements and testing methods for night vision system of passenger cars ISSUED ON: JULY 24, 2024 IMPLEMENTED ON: JULY 24, 2024 Issued by: State Administration for Market Regulation; Standardization Administration of PRC. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 4 4 General requirements ... 5 4.1 Functional requirements ... 5 4.2 Self-check requirements ... 5 4.3 Requirements for system status prompts ... 6 4.4 Requirements for electromagnetic compatibility ... 6 5 Performance requirements ... 6 5.1 Requirements for image display delay ... 6 5.2 Image display quality requirements ... 6 5.3 Target marking requirements ... 6 5.4 Requirements for longitudinal collision warning ... 6 6 Test methods ... 7 6.1 Test environment requirements ... 7 6.2 Test equipment requirements ... 7 6.3 Measurement system requirements ... 8 6.4 Image display delay test ... 8 6.5 Image display quality and target marking test ... 9 6.6 Collision warning test ... 10 Appendix A (informative) Image quality evaluation ... 12 A.1 Image quality assessment and scoring ... 12 A.2 Image quality assessment conclusion ... 12 Performance requirements and testing methods for night vision system of passenger cars1 ScopeThis document specifies the performance requirements for night vision systems of passenger cars and describes the corresponding test methods. This document applies to M1 vehicles equipped with night vision systems.2 Normative referencesThe provisions of the following documents constitute the essential clauses of this document through normative references in this text. Among them, for referenced documents with dates, only the versions corresponding to the dates are applicable to this document; for referenced documents without dates, the latest versions (including all amendments) are applicable to this document. GB 34660 Road vehicles - Requirements and test methods of electromagnetic compatibility GB/T 39263 Road vehicles - Advanced driver assistance systems - Terms and definitions3 Terms and definitionsThe terms and definitions defined in GB/T 39263 and the following apply to this document. 3.1 night vision system A system that provides visual assistance or warning information to the driver during nighttime or other low-light driving conditions. 3.2 subject vehicle The vehicle under test, which is equipped with a night vision system and test equipment. 3.3 target Pedestrians within the detection range of the night vision system. 3.4 longitudinal distance In the subject vehicle coordinate system, the projection distance between the outermost edge of the front end of the subject vehicle and the target's center of mass in the direction of travel of the subject vehicle. 3.5 time to collision; TTC The ratio of the longitudinal distance to the relative speed on the projection of the longitudinal distance at the same moment. 3.6 self-check A function that enables the system to check its own faults.4 General requirements4.1 Functional requirements Night vision systems can be divided into Type I, Type II and Type III and shall meet the following requirements: a) Type I night vision system displays the driving environment in real time; b) Type II night vision system displays the driving environment and marked targets in real time; c) Type III night vision system displays the driving environment and marked targets in real-time, and issues a collision warning when there is a risk of longitudinal collision between the subject vehicle and the target. 4.2 Self-check requirements 4.2.1 The night vision system shall at least perform a self-check after power-on. 4.2.2 The night vision system shall at least have the following self-check functions: a) Check whether the relevant electrical components are operating normally; b) Check whether the relevant sensor components are operating normally. 4.2.3 In the event of an electronic or electrical fault, the fault warning information shall between the target and the subject vehicle, the Type III night vision system shall issue a collision warning. The collision warning shall meet the following requirements: a) When the collision warning is issued, the time to collision (TTC) between the subject vehicle and the target is not less than 1.7 seconds; b) At least one of the visual, acoustic or tactile methods shall be used; c) It shall be clearly distinguished from other prompt information in the vehicle.6 Test methods6.1 Test environment requirements 6.1.1 The test site shall be a dry, flat asphalt or concrete road surface. 6.1.2 The ambient temperature shall be -20 ℃~30 ℃. 6.1.3 The ambient light illuminance shall not exceed 1 lx. 6.1.4 The relative humidity of the environment shall not exceed 75%. 6.2 Test equipment requirements 6.2.1 Test target requirements 6.2.1.1 The target height shall be 1.80 m±0.02 m (excluding the dummy support base), and the target shoulder width shall be 0.50 m±0.02 m. 6.2.1.2 The target shall simulate the temperature characteristics of the human body, and the target heating area shall include but not be limited to the head area, torso area, arm area, hand area and leg area, as shown in Figure 1. The temperature of the heating area shall reach 37 ℃±2 ℃ and shall be kept constant during the test. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 44174-2024 be delivered?Answer: The full copy PDF of English version of GB/T 44174-2024 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 44174-2024_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 44174-2024_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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