# US 11,908,326 B2 · Vehicle alert system and method

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- Number: US 11,908,326 B2
- Document ID: US11908326B2
- Status: Granted
- Kind: B2
- Application number: 17/891,041
- Filed: 2022-08-18
- Published: 2023-04-20
- Granted: 2024-02-20
- Earliest claimed: 2021-10-19
- Assignees: Hyundai Mobis Co., Ltd.
- Applicants: Hyundai Mobis Co., Ltd.
- Inventors: Eun Seok Kang
- Web page: https://patentgrep.com/patent/US11908326B2

## CPC

- G08G 1/16: Anti-collision systems (road vehicle drive control systems for predicting or avoiding probable or impending collision otherwise than by control of a particular sub-unit B60W30/08)
- G08G 1/166: {for active traffic, e.g. moving vehicles, pedestrians, bikes}
- B60W 30/0956: {the prediction being responsive to traffic or environmental parameters}
- B60W 50/14: Means for informing the driver, warning the driver or prompting a driver intervention
- G01S 13/931: of land vehicles
- G08G 1/167: {Driving aids for lane monitoring, lane changing, e.g. blind spot detection}
- B60Q 9/008: {for anti-collision purposes}
- B60W 2050/143: {Alarm means}
- B60W 2554/801: Lateral distance
- G01S 15/931: of land vehicles
- G01S 17/931: of land vehicles
- G01S 2013/9323: {Alternative operation using light waves}
- G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93})
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL

## Abstract

A vehicle alert system includes a detection sensor configured to detect a target vehicle approaching a subject vehicle, a storage configured to store a false alert condition comprising a position or lateral error of the target vehicle with respect to the subject vehicle, and an alert determiner configured to output an alert signal when the target vehicle is detected by the detection sensor and no sensing blockage occurs, and not output the alert signal when the sensing blockage occurs and the detected target vehicle satisfies the false alert condition.

## Claims

### Claim 1

A vehicle alert system comprising:
a detection sensor configured to detect a target vehicle approaching a subject vehicle;
a storage configured to store a false alert condition comprising a position or lateral error of the target vehicle with respect to the subject vehicle; and
an alert determiner configured to output an alert signal when the target vehicle is detected by the detection sensor and no sensing blockage occurs, and not output the alert signal when the sensing blockage occurs and the detected target vehicle satisfies the false alert condition.

### Claim 2 (depends on 1)

The vehicle alert system of claim 1, wherein the detection sensor comprises an ultrasonic wave sensor, a camera, a lidar, or a radar.

### Claim 3 (depends on 2)

The vehicle alert system of claim 2, wherein the detection sensor is further configured to detect the target vehicle based on a reference position angle of the radar.

### Claim 4 (depends on 1)

The vehicle alert system of claim 1, wherein the detection sensor is disposed in front or rear of the subject vehicle to detect the target vehicle.

### Claim 5 (depends on 1)

The vehicle alert system of claim 1, wherein the false alert condition comprises the position of the target vehicle comprising horizontal and vertical distances between the subject vehicle and the target vehicle, or the lateral error of the target vehicle comprising a lateral distance error, a lateral speed error, and a horizontal time error with respect to the subject vehicle.

### Claim 6 (depends on 1)

The vehicle alert system of claim 1, wherein in a state in which the sensing blockage occurs and the target vehicle is approaching the subject vehicle, when the lateral distance error of the target vehicle is less than or equal to a threshold value thereof, and the target vehicle's lateral speed error and time error are greater than or equal to threshold values thereof, the alert determiner is further configured to determine the false alert condition to be satisfied and does not output the alert signal.

### Claim 7 (depends on 6)

The vehicle alert system of claim 6, wherein the alert determiner is further configured to output the alert signal when the lateral distance error of the target vehicle exceeds the threshold value.

### Claim 8 (depends on 6)

The vehicle alert system of claim 6, wherein the alert determiner is further configured to output the alert signal when the lateral speed error of the target vehicle and lateral time error with respect to the subject vehicle are less than the threshold values.

### Claim 9

A vehicle alert method comprising:
detecting a target vehicle approaching a subject vehicle;
storing a false alert condition comprising a position of the target vehicle or a lateral error of the target vehicle with respect to the subject vehicle; and
outputting an alert signal when the target vehicle is detected and no sensing blockage occurs, and outputting no alert signal when the sensing blockage occurs and the detected target vehicle satisfies the false alert condition.

### Claim 10 (depends on 9)

The vehicle alert method of claim 9, wherein the false alert condition comprises the position of the target vehicle comprising horizontal and vertical distances between the subject vehicle and the target vehicle, or the lateral error of the target vehicle comprising a lateral distance error, a lateral speed error, and a horizontal time error with respect to the subject vehicle.

### Claim 11 (depends on 9)

The vehicle alert method of claim 9, wherein in a state in which the sensing blockage occurs and the target vehicle is approaching the subject vehicle, when the lateral distance error of the target vehicle is less than or equal to a threshold value thereof, and the target vehicle's lateral speed error and time error are greater than or equal to threshold values thereof, the false alert condition is determined to be satisfied and the alert signal is not output.

### Claim 12 (depends on 11)

The vehicle alert method of claim 11, wherein the alert signal is output when the lateral distance error of the target vehicle exceeds the threshold value.

### Claim 13 (depends on 11)

The vehicle alert method of claim 11, wherein the alert signal is output when the target vehicle's lateral speed error and lateral time error with respect to the subject vehicle are less than the threshold values.

### Claim 14

A vehicle alert system comprising:
a detection sensor configured to detect a target vehicle approaching a subject vehicle;
a storage configured to store a false alert condition comprising a position or lateral error of the target vehicle with respect to the subject vehicle; and
an alert determiner configured to output an alert signal based on a result of a determination of whether the target vehicle is detected, and a sensing blockage occurs.

### Claim 15 (depends on 14)

The vehicle alert system of claim 14, wherein the alert signal is output when the target vehicle is detected and the sensing blockage did not occur.

### Claim 16 (depends on 14)

The vehicle alert system of claim 14, wherein the alert signal is not output when the sensing blockage occurs and the detected target vehicle satisfies the false alert condition.