Parking radar system without host and control method

Abstract

The invention discloses a parking radar system without a host and a control method. The parking radar system without a host includes a plurality of sensors, wherein each sensor unit can be independently used as a main sensor so as to coordinate other sensors as slave sensors, and controls the work sequence of each slave sensor; and each sensor unit is independent in connection with and in communication with a vehicle bus module and / or a buzzer. Through arrangement of the plurality of sensors with the same structure, each sensor can be used as the main sensor, and the function of the parking radar system without the host is shown better, and more importantly, the function integrity and reliability of the parking radar system are ensured.

Description

technical field [0001] The invention relates to the field of vehicle-mounted parking radar systems, in particular to a host-less parking radar system and a control method. Background technique [0002] After more than ten years of popular use, the parking radar system, that is, what we usually call the reversing radar system, has become increasingly mature. In the early parking radar system, the system is usually configured with two to four sensors, a host (controller), an independent buzzer, or the buzzer is designed to be integrated in the host. The system detects obstacles through various sensors. When the detection distance reaches the alarm condition, the system drives the buzzer through the host to give an audible alarm. The current parking radar system, in addition to the sound alarm prompt, communicates with the vehicle bus module through the host computer, such as connecting and communicating with the instrument and the multimedia display screen, and simultaneously...

AI Technical Summary

Problems solved by technology

[0010] 1. When the master sensor 91 fails and the hostless radar system is powered on, the system cannot perform complete and accurate self-checks and prompts for the slave sensors 92a, 92b, and 92c;

[0011] 2. When the master sensor 91 fails, the slave sensors 92a, 92b, 92c cannot communicate with the master sensor or communicate with the outside world, so even if the slave sensors 92a, 92b, 92c are in good condition, they cannot function normally;

[0012] 3. Only the main sensor 91 is connected to the buzzer and can drive the buzzer to give an alarm prompt. The slave sensor has no such function. Therefore, when the main sensor 91 fails, the system’s drive control of the buzzer has failed

[0016] 1. When the fourth sensor 61d fails, when the hostless radar system is powered on, the system cannot perform a complete and accurate self-check and prompt for the third sensor 61c, the second sensor 61b, and the first sensor 61a;

[0017] 2. When the fourth sensor 61d fails, the third sensor 61c, the second sensor 61b, and the first sensor 61a cannot communicate with the fourth sensor 61d or communicate with the outside world, so when the fourth sensor 61d fails, the third sensor 61c , even if the second sensor 61b and the first sensor 61a are in good condition, they cannot function normally;

[0021] 1. When the first sensor 71a fails, when the hostless radar system is powered on, the system cannot locate and assign ID numbers to each sensor, and cannot make complete, Accurate self-inspection and reminder;

[0022] 2. When the first sensor 71a fails, even if the second sensor 71b, the third sensor 71c, and the fourth sensor 71d are in good condition, they cannot perform normal functions because of self-test failure and physical connection interruption;

[0023] 3. In this hostless parking radar system, the system does not support direct connection and drive the buzzer for alarm prompts, but uses the vehicle bus module or other unit modules to drive the buzzer for alarm prompts. Its functionality is insufficient. To some extent, it can be said that it uses the vehicle-mounted bus module to act as the host, and it can be said that it is not a complete sense of the hostless parking radar system;

[0024] 4. After the first sensor 71a fails, even if the second sensor 71b, the third sensor 71c, and the fourth sensor 71d are in good condition, they are not connected and communicated with the vehicle-mounted bus module, so the communication between the system and the vehicle-mounted bus module is limited. expired

[0026] 1. When power-on, when a certain sensor (mainly the main sensor) fails, the system cannot perform a complete and accurate self-test for all sensors, that is, in the case of a certain sensor failure, the system cannot judge at the same time when power-on The status of each other sensor is failure or good

[0027] 2. After power-on, when a certain sensor fails, the detection function of other sensors in the system, even if they are good, will fail, resulting in the failure of the overall detection function of the system

[0028] 3. The system cannot be directly connected and drive the buzzer for sound alarm prompt, or only connect one of the sensors and drive the buzzer for sound alarm prompt, not all sensors are connected and drive the buzzer for sound alarm prompt

The hostless parking radar system that cannot be directly connected and drives the buzzer for sound alarm prompts needs to use the vehicle bus module or other unit modules for sound alarm prompts. The functionality of the system is poor, and it can be said that it is not strictly wireless. Host parking radar system

Or, only one of the sensors is connected and drives the buzzer for sound alarm prompt, not all sensors are connected and drive the buzzer for sound alarm prompt without host parking radar system, when the sensor connected and drive the buzzer fails , the sound alarm function of the system fails, so the functionality of the system is relatively poor

[0029] 4. The system cannot communicate with the vehicle bus module, or only one of the sensors communicates with the vehicle bus module, not all sensors communicate with the vehicle bus module

The hostless parking radar system that cannot communicate with the on-board bus module results in the parking radar system not being able to display the parking radar image through the car instrument or on-board multimedia display, and the functionality of the system is poor

Or, only one of the sensors communicates with the vehicle-mounted bus module, and not all sensors communicate with the vehicle-mounted bus module. Functional failure, resulting in complete or partial failure of system functions, and relatively poor functionality of the system

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