GB/T 41797-2022Performance requirements and test methods for driver attention monitoring system

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020, Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.

Please note that some contents of this document may involve patents. The issuing organization of this document is not responsible for identifying patents.

This document was proposed by the Ministry of Industry and Information Technology of the People’s Republic of China.

This document shall be under the jurisdiction of National Technical Committee of Auto Standardization (SAC/TC 114).

Drafting organizations of this document: Dongfeng Commercial Vehicles Co. Ltd., China Automotive Technology and Research Center Co., Ltd., China Merchants Testing Vehicle Technology Research Institute Co., Ltd., Hangzhou Hikvision Automotive Technology Co., Ltd., FAW Jiefang Automotive Co., Ltd., Shenzhen Autocruise Technology Co., Ltd., Huizhou Desay SV Automotive Co., Ltd., Shanghai SenseTime Lingang Technology Co., Ltd., Zhejiang Asia Pacific Mechanical & Electronic Co., Ltd., BAIC Group Off-road Vehicle Co., Ltd., Renmin University of China, Geely Automobile Research Institute (Ningbo) Co., Ltd., Pan Asia Technical Automotive Center Co., Ltd., Peugeot Citroen (China) Automoive Trade Co., Ltd., Dalian University of Technology, China Electronics Standardization Institute.

Chief drafting staffs of this document: Li Yang, Xie Hanguang, Wang Kan, Lin Chenglin, Li Yang, Yang Zhibo, Guan Yanfeng, Yang Jishan, Cai Jingwen, Fan Yiqing, Sun Xiaolong, Zhuang Yunlong, Qi Yue, Wang Yixin, Liu Di, Zhang Zhanzhan, Xu Jianxun, Zhang Mingheng, Zhang Jinchong, Zhong Chen.

1 Scope

This document specifies the general requirements, performance requirements and test methods for driver attention monitoring system (hereinafter referred to as the “system”).

This document applies to M and N vehicles which are equipped with a driver attention monitoring system based on image recognition technology. It can be used as a reference for the implementation of other systems with the same function.

2 Normative references

The following documents are normatively referenced in this document and are indispensable for its application. For dated references, only the version corresponding to that date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document.

3 Terms and definitions

Terms and definitions determined by GB/T 39263 and the following ones are applicable to this document.

3.2 Distraction

The state in which the driver is unable to concentrate on performing the driving task due to fatigue driving, interference from the external environment, or actions unrelated to driving while driving the vehicle.

3.3 Abnormal head pose

The behavior where the front-back tilt angle and horizontal rotation angle of the head exceed the normal range when the driver raises the head, lowers the head, or shakes the head left and right.

3.4 Accuracy rate

The ratio of the number of correct detections of a behavior to the number of detection events (number of correct detections + number of false detections).

3.5 Detection rate

The ratio of the number of correct detections of a behavior to the number of real events (number of correct detections + number of missed detections).

3.6 Humanoid robot

A robot, with the appearance of human, which is programmed to mimic human movements.

4 General requirements

4.2 Self-inspection

The system shall perform self-inspection after power-on and shall have at least the following self-inspection functions:

-- Check whether the relevant electrical components are in normal operation;

-- Check whether the relevant sensing elements are in normal operation.

4.3 System state transition and information prompt requirements

When the system is fault-free, the following requirements shall be met:

provided. When the driver turns off the system actively, the system shall send out an optical prompt message and display it continuously;

after the activation condition is satisfied, and the activation condition shall be at least one of the following methods:

-- Direct activation: the system is automatically activated after entering the standby state;

-- Minimum speed activation: the system is automatically activated when the vehicle speed reaches the minimum activation speed designed by the system;

d) When the system, which is activated, detects that the driver is distracted, it shall send a prompt message to the driver in at least two ways of optics, acoustics and haptics, which shall be distinguished from other prompt messages;

e) When the activation condition is not met, the system shall exit from the activation state to the standby state;

f) When the system is in the standby and off state, no prompt message shall be sent to the driver.

4.4 Fault indication

In case of malfunction of the system, the system shall have a fault indication function and shall at least continuously send an indication to the driver in an optical manner. The indication shall be distinguished from other prompts in the system and shall be visible.

4.5 Electromagnetic compatibility

The electromagnetic compatibility of the system shall meet the requirements of GB 34660.

5 Performance requirements

5.1 Requirements for driver identification ability

Carry out the test according to 6.2. When the behavior of the test targets meets the prompt message conditions in Table 1, the number of people, whose behaviors are all correctly identified by the system and to whom a prompt message meeting the requirements of 4.3 d) is sent out, shall not be less than 2/3 of the total number of test personnel. Among all behaviors of the test personnel whose behaviors are not fully identified, there shall be at least 1 time when the system identifies the corresponding behavior and sends out a prompt message.

If the system can send out a prompt message when the driver yawns or smokes, carry out the test according to 6.2. When the behavior of the test targets meets the prompt message conditions in Table 1, the number of people, whose behaviors are all correctly identified by the system and to whom a prompt message meeting the requirements of 4.3 d) is sent out, shall not be less than 2/3 of the total number of test personnel. Among all behaviors of the test personnel whose behaviors are not fully identified, there shall be at least 1 time when the system identifies the corresponding behavior and sends out a prompt message.

to fail to be correctly identified by the system; besides, during the 6 eye-closing tests of the test personnel, at least 1 shall be correctly identified by the system.

hand-held cigarette and the lips shall not be greater than 2 cm Smoking duration ≥2 s a The test personnel’s head pose direction is consistent with the line-of-sight direction.

5.2 Requirements for detection rate and accuracy rate

Carry out the test according to 6.3. When the test target behavior meets the prompt message conditions in Table 1, the system shall send out a prompt message that meets the requirements of 4.3 d) within 1.5 s, where the detection rate and accuracy rate shall be greater than or equal to 95%. […]

6 Test methods

6.1 Test conditions

6.1.1 Test environmental conditions

The test environmental conditions shall meet the following requirements: -- It shall be greater than 2 000 lx and less than 10 000 lx during the day; […]

6.1.2 Test tool conditions

Test tools shall meet the following requirements:

170 mm, a thickness of 7 mm ~ 10 mm and no mobile phone case, or a substitute of the same size;

mm, or a substitute with the appearance characteristics of cigarette.

6.2 Driver identification ability test

6.2.1 Test target

The test targets shall be at least 3 adults who have no facial and eye defects, meeting the dimensional requirements of GB/T 10000 for height, eye height in sitting posture, and head shape and face length for the 18 ~ 60-year-old group.

6.2.2 Test procedure

Under the daytime illumination intensity, when the system is active and functioning normally, the test targets perform the behaviors in Table 1 in the driving area. Each person performs each behavior 6 times, and the interval between single behaviors shall be at least 5 s.

6.3 Test for detection rate and accuracy rate

6.3.2 Light source

The light source shall be able to move according to the position of the light source shown in Figure 1, with the central position of the first row of seats of the vehicle as the center, where α is 7. […]

6.3.3 Test procedure

Carry out the test under day and night conditions, respectively. When the system is active and functioning normally, the test target shall perform the behaviors in Table 2 in the driving area. See Table 3 for the number of tests. The interval between each single behavior shall be greater than 5 s. The test target looks ahead and maintains a normal driving posture, then closes the eyes, and then opens the eyes after 2 seconds of eye-closing. direction of the head is consistent with the driving direction returns to the 0° position after 3 seconds. direction of the head is consistent with the driving direction returns to the 0° position after 3 seconds. direction of the head is consistent with the driving direction returns to the 0° position after 3 seconds. […]

Appendix A Humanoid robot

A.1 General

This Appendix specifies the technical requirements for humanoid robots used for system performance tests.

A.2 Requirements

A.2.1 General requirements

A.2.1.1 Humanoid robot dimensions

The humanoid robot dimensions shall comply with the provisions of GB/T 10000 on the basic value of human body dimensions for adults aged 18 ~ 60 years old. […]

A.2.1.2 Eyes

The horizontal width range of the eyes of the humanoid robot shall be 30.0 mm ~ 33.0 mm, and the maximum vertical height range shall be 5.0 mm ~ 11.7 mm. The eye dimensions are shown in Figure A.5.

A.2.1.3 Mouth

The maximum vertical height range of the mouth of the humanoid robot shall be 28.9 mm ~ 33.9 mm, and the maximum horizontal width range shall be 46.9 mm ~ 56.9 mm.

A.2.1.4 Head movement range

The head rotation range of the humanoid robot shall be -90° ~ 90°; the head-up limit shall be 45°; the head-down limit shall be 45°.

A.2.1.5 Movements

The humanoid robot shall be capable of performing the movements shown in Table A.2.

Each joint can move independently to phone is not blocked by the hand), hold the mobile phone, cigarette Combinatio n movement s Combination of related parts of the head, combination of the head and hands Eye-closing + yawning linkage, yawning + head-up linkage, head-up + answering handheld phone and other combinations

A.2.1.6 Accuracy

The accuracy of humanoid robot shall meet the following requirements:

-- Positioning accuracy of fingers: spatial position deviation less than 0.25 mm;

than or equal to 5 mm.

A.2.2 Feature requirements

A.2.2.1 Feature points

When it is detected by the same driver attention monitoring system, the humanoid robot shall be able to detect the data of at least 68 feature points, which is consistent with the data of feature points detected by real people.