Freetech CVR10 Radar Owner’s Manual

CVR10 Radar Product Specification Version: V1.3
Released date：2021-5-20

CVR10 Radar

diagram of FOV

Overview

This document is Freetech CVR10 millimeter wave radar product specification, which mainly illustrates CVR10 radar structure, technical indicator, and functions that can be realized.

Hardware

2.1 Structure design
CVR10 radar structure is designed as a single-box system, consisting of housing, heatsink, PCBA, shielding case, antenna cover, and etc. As shown in the figure below. Antenna cover and housing are connected by laser welding technology, forming a sealed space to protect electronic device inside, and also provides a terminal interface connector to the vehicle.

2.2 Circuit design
CVR10 radar uses TI’s high performance radar SOC AWR1642. The hardware block diagram is shown as the figure below.

Dimension and Weight

CVR10 radar basic dimensions are: 91 x 78 x 20 mm. Weight is less than 100g. Specific dimension is shown as the figure below (in mm).

Interface

CVR10 radar uses 8-pin interface, and the pin positons are shown as the figure below:

Detailed radar connector pin definition is as below:

Note: vehicle CAN supports standard CAN communication, and private CAN supports both standard CAN communication and CAN-FD communication.

Electrical and Environment Parameters

5.1 Power dissipation
With 12V power supply, CVR10 radar current and power dissipation are shown as the table

| Sleep state| Normal| Max Value
---|---|---|---
Current| <100uA| 220mA| 260mA
Power| | 2.7W| <3W

Table2: Current and power

5.2 Working state under different voltages
Under different voltages, CVR10 radar working states are shown as the table below:

Table3: Working state table

5.3 Environment parameters
CVR10 radar related environment parameters are as below:

1. Storage temperature: -40℃ ~ 105℃
2. Operating temperature: -40℃ ~ 85℃
3. Function limited operating temperature: 85℃ ~ 95℃

Radar perception performance

CVR10 radar can detect object with RCS (radar cross-section) between – 10~+ 40dBsm.
Perception performance parameter table is shown as below:

1 °@±45°
Resolution| 7°
Elevation| None
Self-calibration| ±3° Azimuth

Table 4: Performance parameter table

Maximum detect distance for variant type objects in different FOV is shown as the table below:

Table5: Maximun detected range for variant objects

FOC is shown as the figure below:

Figure 5: FOV schematic diagram

Radar application function

CVR10 radar can realize DOW, BSD, LCA, RCTA, RCW and etc. Function false positive rate and false negative rate are both less than 1%.

7.1 DOW
During ego vehicle being standstill or driving in very low velocity, when object is approaching ego vehicle rapidly from the rear direction, this function will trigger warning level 1.  When vehicle door is opened, this function will trigger warning level 2. AUTOSAR network management is supported, and DOW function can work continuously for several minutes after ignition off.

Triggering condition is as below:

• 0≤Ego vehicle≤5kph
• TTC<3s
• Object velocity>1m/s
• The intersection angle between object vehicle trajectory and ego vehicle < 30°
• The vehicle door status is unlocked

7.2 BSD/LCA
When object is entering blind spot zone or approaching ego vehicle rapidly from side rear direction, this function can trigger level 1 warning. When level 1 warning condition is satisfied, the level 2 warning will be triggered if the driver enable the turn indicator light.

Triggering condition is as below:

• Gear position: Drive gear
• 0≤Ego vehicle≤150kph
• For BSD function, object is in blind spot zone; For LCA function, TTC<3.5s, and object is in alert zone
• Turning radius>125m
• Object velocity>1m/s

7.3 RCTA
During ego vehicle driving in reverse direction, while object is crossing in side rear direction, if there is collision risk, RCTA will be triggered. This function can support sidelong parking scenario, with angle up to 45°.

Triggering condition is as below:

• Gear position: Reverse gear
• 0≤Ego vehicle≤150kph
• TTC<3.5s
• Object velocity>1m/s
• 2m<collision point<-4m
• The object is in the alert zone

7.4 RCW
When object is approaching ego vehicle rapidly from rear direction, this function can trigger warning, supporting level 1 and level 2 warning.

Triggering condition is as below:

• Gear position: Drive gear
• 0≤Ego vehicle≤150kph
• TTC<1.4s (warning level 1), TTC<0.8s (warning level 2)
• Relative velocity between ego vehicle and object vehicle is more than 10kph
• Overlap ratio for ego vehicle and object vehicle is more than 0.9m

Appendix

Please take attention that changes or modification not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

Freetech Intelligent Systems Co., Ltd.

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