FCC ID: 2A7MKSRR520 Rear short-range ranging sensor

Introduction to Hirains Rear Short-range Ranging SensorRadar Beijing Jinwei Hirain Technologies Co., Inc. 1 /Introduction .............................................................................................. 1 1.1 /Purpose ....................................................................................... 1 1.2 /Scope .......................................................................................... 1 1.3 /Terminology ................................................................................ 1 2 /Product..................................................................................................... 1 Radar Principle .................................................................... 1 2.1 FOV /FOV ................................................................................... 2 2.2 2.3 /Parameters ........................................................................... 2 2.4 /Geometric Structure ..................................................................... 3 2.5 /Model No. of Harness Connector ............................................. 4 2.6 /Pin Definition of the Connector ................................. 4 Label ........................................................................................... 5 2.7 3 / Radar function.................................................................................. 6 3.1 BSD .................................................................................... 6 3.2 DOW ........................................................................... 7 3.3 RCTA ................................................................... 7 4 NOTICE ........................................................................................................... 8 I 1 /Introduction 1.1 /Purpose This document introduces the Rear short-range ranging sensor (SRR) that designed and manufactured by Beijing Jinwei Hirain Technologies Co., Inc. 1.2 /Scope This document is used for reference only to the Rear short-range ranging sensor customers of Beijing Jinwei Hirain Technologies Co., Inc. 1.3 /Terminology SRRRear short-range ranging sensor BSDBlind Spot Detection RCTARear Cross Traffic Alert DOWDoor Open Warning RCWRear Collision Warning 2 /Product L2 L2 BSDRCTAFCTADOWLCA Rear short-range ranging sensor is installed right in the side of the vehicle, intended to detect, measure, track and identify obstacles in the target region. SRR mainly supports the functions of BSDRCTAFCTADOWLCA for ADAS with L2 and above. 2.1 /Radar Principle SRR520 uses the pulse doppler (PD) scheme as basic principle for its measurements. Compared with frequency modulated continuous wave (FMCW), it avoids the serious coupling between range and doppler domains, because these are mapped to a 2-dimensional frequency range by two succeeding fast Fourier transformations (FFTs), that are calculated in the processing unit of the sensor. SRR520 (PD) 1

(FMCW) FMCW -

FFT 2.2 /Antennas SRR520 uses 3 Tx antennas and 4 Rx antennas to radiate the microwave signals generated by radio frequency (RF) chip into the air and receive echoes reflected by targets. The gain is 16dBi for both antennas and 13dBi for single antennas. SRR520 3 (Tx) 4 (Rx) FOV 16dBi 13dBi 2.3 FOV /FOV 1 FIG. 1 shows the beam coverage area of passenger car after the Rear short-range ranging sensor. 1 FOV Figure 1 Schematic diagram of FOV 2.4 /Parameters 1 Table 1 Performance index of Rear short-range ranging sensor system

/Parameters

/Value

/System Characteristics

/Frequency

/Operating voltage

/Weight

/Update Rate 76~77 GHz 9V~16V 120g 50ms 2

/Functional Safety Level FOV-

/(Range-Azimuth Plane)

/Range

/Velocity

/Elevation

/Range ASIL B 75 0.5~100m

-110 m/s ~50 m/s 10

/Target Detection Ability

< 1 /500h

/Multi-Objects Discrimination Ability

/Range Resolution

/Velocity Resolution

/Angular Resolution

< 0.4 m

< 0.14m/s

< 7

/Parameter Precision

/Range Precision

/Velocity Precision

/Azimuth Precision Output Number of Tracking Targets Output Number of Point Cloud

(Optional)

/ transmitted power

/Power Consumption

/Nominal Voltage

/Operating Temperature

/Storage Temperature

/ International Protection

/Interface 2.5 /Geometric Structure

< 0.1 m

< 0.05 m/s

< 1 64

<=200

< 33.9dBm

< 5W 12V

-40~ 85

-40~ 105 IP6K9K 2xCAN/CAN-FD1xEthernet 70mm * 65mm * 31mm Rear short-range ranging sensor size is: 70mm * 65mm * 31mm ( with connector size) 3 2 Figure 2 Structure diagram 2.6 /Model No. of Harness Connector 2 Table 2 Model No. of Harness Connector

/Connector Type

/Model No.

/Supplier 12P /12 Pin Connector 6189-8374 Sumitomo

/ Terminal 6188-6387 Sumitomo

(a) /Connector in PCB

(b)/Connector in Harness 3 Figure 3 Views of the Connector 2.7 /Pin Definition of the Connector 12V Table 3 gives the measured pin value of the SRR operating in 12 Voltages. 4 3 Table 3 Pin Definition of the Connector N.C POS1 CAN1_L CAN2_L 1 CAN1 CAN2 POS2/ High Side Driver1 2/ 1 POWER N.C GND CAN1_H CAN2_H IGN/High Side Driver2 High Side Driver3 CAN1 CAN2

/ 2 3 1 2 3 4 5 6 7 8 9 10 11 12 2.8 Label FCC ID: 2A7MKSRR520

/Label size30mm*20mm

/ Software version numbersw.1.00.00

/ hardware version numberhw.1.00.00 IP6K9K 5 3 / Radar function 3.1 BSD The function is defined as real-time monitoring of the driver's visual field blind area and warning information when other road users appear in the specified blind area. The main function of the blind area monitoring system is to monitor other traffic participants in the blind area of the driver's visual field, and to give early warning to the driver. The blind spot monitoring function covers adjacent areas on the left and right sides, and the target vehicles are ordinary mass-produced vehicles or motorcycles. System functions are realized by judging the following information:

1) 2) 3) 1) The relative distance between the car and other traffic participants;

2) The relative speed of the car and other traffic participants;

3) Whether other traffic participants are located in the blind area monitoring range. 6 3.2 DOW The function definition is to monitor the rear of the vehicle which may endanger the safety when the door is about to be opened in the parking state, and to issue warning information when the risk of collision may occur due to the door opening. The door opening reminder system has an alarm function. If there is a risk of collision with other traffic participants when the driver and passenger open the door, the system will send an alarm to the driver and passenger. System functions are realized by judging the following information:

1) 2) 3) DOW 4) 1) Vehicle speed 2) The relative speed between the car and other traffic participants 3) Whether other traffic participants are located in the DOW alarm area 4) The relative distance between the car and other traffic participants Based on the above information, an alarm is issued to the driver and passenger according to the risk of collision. 3.3 RCTA 7 The function is defined as monitoring the situation that may endanger the safety in the rear lateral of the vehicle under the state of reversing, and issuing warning information when the risk of collision may occur. The main function of the vehicle rear lateral traffic warning system is to send an alarm to the driver when there is potential conflict danger between the vehicle and the vehicle. System functions are realized by judging the following information:

1) 2) 3) 1) The relative distance between the car and the coming car;

2) The relative speed between the car and the car;

3) Whether the autonomous vehicle is located on the front track of the incoming vehicle. Based on the above information, the controller sends an alarm to the driver according to the degree of driving danger. 4 MANUFACTURER INFORMATION ManufacturerBeijing Jingwei Hirain Technologies Co., Inc. Mailing Address4F, Block 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing, P.R.China 5 NOTICE Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. 8 To maintain compliance with the RF exposure requirement, a separation distance of 20 cm between the device and the human should be maintained. 9

QF094234 Page 1 of 1 Revision 0 Authority to Act as Agent Date: 18.07.2022 TUV Rheinland Group 762 Park Avenue Youngsville, NC 27596 To Whom It May Concern: I appoint TV Rheinland (China) Ltd. & Mr. Zhu Qiusheng to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the FCC or Industry Canadas regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for Certification, as specified by TUV Rheinland Group, still resides with Beijing Jingwei Hirain Technologies Co., Inc. For TCB applications, We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. Thank you, Agency Agreement Expiration Date: 12 months By : Zhang, xuejian (Signature) (Print Name) Title : Project manager Telephone : 18501957332 On behalf of : Beijing Jingwei Hirain Technologies Co., Inc. (Company Name)

SRR520 uses 3 Tx antennas and 4 Rx antennas to radiate the microwave signals generated by radio frequency (RF) chip into the air and receive echoes reflected by targets. ModelRFSRR520 ManufacturerBeijing Jingwei Hirain Technologies Co., Inc. Mailing Address4F, Block 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing, P.R.China

Confidentiality Letter Date: <2022-12-28>

Subject: Confidentiality Request for FCC ID: 2A7MKSRR520 Pursuant to FCC 47 CRF 0.457(d) and 0.459 and IC RSP-100, Section 10, the applicant requests that a part of the subject FCC/IC application be held confidential. Type of Confidentiality Requested Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Permanent Permanent Permanent Permanent Permanent Permanent Exhibit Block Diagrams External Photos Internal Photos Operation Description/Theory of Operation Part List/Tune-Up Procedure Schematics Test Setup Photos Users Manual Beijing Jingwei Hirain Technologies Co., Inc. has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to

"competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality:

The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality:

The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Applicant is also aware that they are responsible to notify TUV Rheinland in the event information regarding the product or the product is made available to the public. TUV Rheinland will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04-

1705. Sincerely, By:

(Signature/Title) Zhang, xuejian

(Print name)