A parking assist radar system controller integration mechanism

Abstract

The application relates to a parking auxiliary radar system controller integration mechanism, which comprises multiple sets of integrated parking auxiliary radar systems and connectors; each set of integrated parking auxiliary radar system comprises a master sensor and a slave sensor; the controller is integrated with the master sensor, the master sensor adopts a single-chip microcomputer chip, and the chip, a CAN interface and a CAN module are integrated; the slave sensor uses a special high-integration special chip; the master sensor can receive control signals such as gears, vehicle speeds, hand brakes and environment temperatures, can drive the slave sensor to detect and work and perform distance measurement algorithm operation, and the detection result is output to a vehicle-mounted entertainment system in a CAN bus communication mode to perform sound or direction warning. The master sensor is integrated with the controller, has the functions of the controller and the sensor, supports the CAN communication mode, realizes the sound wave driving and detection operation control functions, and the slave sensor is a common ultrasonic sensor.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobiles, and particularly relates to a parking auxiliary radar system controller integration mechanism. BACKGROUND

[0002] At present, with the continuous improvement of people's consumption level, automobiles have become an essential tool in people's daily life. And people have not only satisfied with the basic functions of automobiles, but also demand more intelligent and safer automobile products. As an essential auxiliary safety system of vehicles, how to reduce the cost under the premise of ensuring the performance has become an essential link in the development process of each vehicle factory.

[0003] The traditional parking auxiliary radar system (PDC) is composed of a single PDC controller and different numbers of ultrasonic sensors. The sensor is driven by the PDC controller to emit ultrasonic signals. When the ultrasonic signal meets an obstacle, the reflected echo signal is received and processed by the sensor and transmitted back to the PDC controller for data logic operation processing to determine the position and distance of the obstacle. If the distance of the obstacle reaches the set warning limit value, the PDC controller sends a warning information to the vehicle-mounted audio speaker and LCD display through the CAN bus to sound a prompt and simulate a display to inform the driver of the situation of the obstacles in front and behind the vehicle, to assist the driver to clear the dead angle of view and improve the safety of parking.

[0004] Therefore, in order to cope with the development direction of the current automobile intelligence and safety, it is urgent to develop a parking auxiliary radar system controller integration mechanism to integrate the parking auxiliary radar system controller and the sensor, to save the cost, improve the user experience and highlight the charm of the whole vehicle. SUMMARY

[0005] The purpose of the application is to provide a parking auxiliary radar system controller integration mechanism to solve the problem of integrating the parking auxiliary radar system controller and the sensor, saving the cost, improving the user experience.

[0006] The purpose of the application is achieved by the following technical scheme:

[0007] A parking auxiliary radar system controller integration mechanism, comprising a plurality of integrated parking auxiliary radar systems and a plurality of connectors.

[0008] The integrated parking auxiliary radar system comprises a main sensor and a slave sensor; the connector is injection molded on the main sensor housing and the slave sensor housing respectively, the main sensor and the slave sensor connector are connected through the vehicle wire harness; the controller is integrated with the main sensor, the main sensor adopts a single-chip microcomputer, integrates the chip, CAN interface and CAN module, supports CAN communication and realizes the sound wave driving and detection operation control function; the slave sensor uses a special high-integration special chip; the main sensor can receive gear, vehicle speed, hand brake, environment temperature and other control signals, drive the slave sensor detection work and perform distance measurement algorithm operation, and the detection result is output to the vehicle-mounted entertainment system in CAN bus communication mode for sound or direction warning.

[0009] Further, the connector adopts 14 wires, compatible with switch hard-wire input control, and the port communication uses digital communication design.

[0010] Further, the main sensor and the slave sensor are distinguished by different part numbers: the main sensor has a CAN function and is an independent part number, and the slave sensor has the same part number; the main sensor has independent control ultrasonic wave and logic operation function, and can constitute independent distance measurement warning function.

[0011] Further, the main sensor can directly poll and identify the installation position of the slave sensor.

[0012] Further, the main sensor has a self-diagnosis function, performs self-checking when the system is powered on, and sends corresponding prompt messages to the vehicle-mounted instrument to prompt system normal start or fault when the self-checking is normal or faulty.

[0013] Further, the main sensor controls and processes sensor sending and returning signals for operation processing, and transmits the detection result to the instrument and the entertainment system for integrated warning.

[0014] Further, the main sensor can transmit distance and direction alarm signals to display the direction and distance of the obstacle located in front of or behind the bumper.

[0015] Further, the main sensor can control itself and other sensors on the network to send and receive ultrasonic wave signals, perform algorithm operation on the received obstacle echo signals, output the operation result to the instrument or the entertainment system through the main sensor through CAN for sound and direction warning, and prompt the direction of the obstacle to assist the driver to safely park.

[0016] Further, the slave sensor is a general ultrasonic sensor, adopts a three-wire design, and uses a special protocol to realize digital communication design.

[0017] Further, the main sensor and the slave sensor in each integrated parking auxiliary radar system are not interchangeable, and are directly distinguished in structure and installation.

[0018] Compared with the prior art, the application has the following advantages:

[0019] The controller and the sensor are integrated as the main sensor in the application, and the main sensor has the functions of the controller and the sensor, supports CAN communication mode, and realizes the functions of sound wave driving and detection operation control. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0021] Figure 1 The main sensor is shown in the schematic diagram;

[0022] Figure 2 The slave sensor is shown in the schematic diagram;

[0023] Figure 3 The main and slave sensors are shown in the schematic diagram;

[0024] Figure 4 The integrated parking auxiliary radar system is shown in the schematic diagram. DETAILED DESCRIPTION

[0025] The present application will be further described below in combination with the embodiments:

[0026] The present application will be further described below in combination with the embodiments:

[0027] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", etc. are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0028] This invention relates to a parking assistance radar system controller integration mechanism, comprising multiple integrated parking assistance radar systems and multiple connectors. Each integrated parking assistance radar system includes a master sensor and a slave sensor; the controller is integrated with the sensor as the master sensor.

[0029] The connectors are respectively injection molded on the main sensor housing and the slave sensor housing, and the main sensor and slave sensor connectors are connected through the vehicle body wiring harness.

[0030] like Figure 1 As shown, the main sensor uses a single-chip microcontroller (RENESAS R5F series chip), which is selected to be AEC-Q100 certified. It integrates the chip, CAN interface, and CAN module into one unit. With the help of operational amplifier planning, the product can be miniaturized and the design of EMC can be effectively optimized.

[0031] The connector uses 14 wires, is compatible with hard-wired switch input control, and uses digital communication design for all ports, which easily meets EMC-related indicators and has better anti-interference performance than traditional analog sensor designs; it supports CAN communication and realizes acoustic wave drive and detection calculation control functions.

[0032] like Figure 2 As shown, the sensor uses a dedicated, highly integrated chip design; it adopts a three-wire design, and the port communication uses a dedicated protocol to achieve digital communication design, which easily meets EMC-related indicators and has better anti-interference performance than traditional analog sensor designs.

[0033] like Figure 3 As shown, the master and slave units of the same system cannot be interchanged, and the structure and installation are directly differentiated by their appearance.

[0034] like Figure 4 As shown, the integrated parking assistance radar system is designed with a master sensor directly driving a common sensor architecture. The master and slave sensors have different principles and are distinguished by different structural shapes and part numbers. The master sensor directly drives the slave sensor to detect and perform ranging algorithm calculations. The detection results are output to the in-vehicle entertainment system via CAN bus communication for sound or directional warnings.

[0035] Integrated parking assist radar systems can be configured and expanded in different ways by combining different numbers of sensors.

[0036] Brief description of the integrated parking assistance radar system:

[0037] Parking auxiliary radar system controller integration mechanism is controlled by main sensor itself and other sensors on the network to send and receive ultrasonic signals, and the received obstacle echo signals are calculated by algorithm, and the calculation results are output to the instrument or entertainment system by the main sensor through CAN to give sound and direction warning, prompting the direction of the obstacle to assist the driver to safely park, and the basic functions of the sensor are as follows:

[0038] The main sensor and the slave sensor are distinguished by different part numbers.

[0039] The main sensor with CAN function is independent as a part number, and the slave sensor is the same part number (with interchangeability); the main sensor has independent control ultrasonic and logic operation function, and can constitute independent ranging warning function.

[0040] Master-slave direction recognition function: the main sensor directly polls to identify the installation position of the slave sensor.

[0041] Self-diagnosis function: the system performs self-checking when powered on, and sends corresponding prompt message to the vehicle instrument to prompt the system to start normally or to appear fault.

[0042] Parking auxiliary radar mode and communication: control and process sensor sending and returning signals for operation processing, and transmit detection results to the instrument and entertainment system for integrated warning.

[0043] Filter and suppress interference: suppress interference signals.

[0044] Transmit distance and direction alarm signal: display the direction and distance of the obstacle in front and rear bumper.

[0045] Transmit signal recognition:

[0046] 1. CAN communication: receive control signals such as gear, speed, hand brake, and environment temperature, and send working status, detection warning message, and diagnosis and configuration functions.

[0047] 2. Internal network communication: master-slave sensor control communication: self-defined.

[0048] Note that the above is only the preferred embodiment of the present application and the technical principle applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A parking assist radar system controller integration mechanism characterized by: The application relates to a parking auxiliary radar system, which comprises a plurality of integrated parking auxiliary radar systems and a plurality of connectors. Each integrated parking auxiliary radar system comprises a master sensor and a slave sensor; the connectors are respectively injection-molded on the master sensor shell and the slave sensor shell, the master sensor connector and the slave sensor connector are connected through a vehicle body wire harness; a controller is integrated with the master sensor, the master sensor adopts a single-chip microcomputer, integrates a chip, a CAN interface and a CAN module, supports CAN communication and realizes sound wave driving and detection operation control functions; the slave sensor uses a special high-integration special chip; the master sensor can receive gear, vehicle speed, hand brake and environment temperature control signals, can drive the slave sensor to detect and work and perform distance measurement algorithm operation, and the detection result is output to a vehicle-mounted entertainment system in a CAN bus communication mode to perform sound or direction warning; the connector adopts 14 wires, is compatible with switch hard-wire input control, and uses digital communication design for port communication; the master sensor and the slave sensor are distinguished by separate part numbers; the master sensor has independent control ultrasonic wave and logic operation functions, and can constitute independent distance measurement warning functions; the master sensor can directly poll and drive the installation position of the slave sensor; the master sensor has a self-diagnosis function, can perform self-checking when the system is powered on, and sends corresponding prompt messages to a vehicle-mounted instrument to prompt system normal starting or fault occurrence when the self-checking is normal or fault; the master sensor controls and processes sensor sending and return signals to perform operation processing, transmits detection results to the instrument and the entertainment system to perform integrated warning; the master sensor can transmit distance and direction alarm signals, displays the direction and distance of an obstacle located in front of or behind a bumper; the master sensor can control itself and other sensors on the network to send and receive ultrasonic wave signals, performs algorithm operation on the received obstacle echo signals, and outputs the operation results to the instrument or the entertainment system through the master sensor through CAN to perform sound and direction warning, prompts the direction of the obstacle to assist a driver to safely park; the slave sensor is a common ultrasonic sensor, adopts a three-wire design, and uses a special protocol to realize digital communication design for port communication; the master sensor and the slave sensor in each integrated parking auxiliary radar system are not interchangeable, and are directly distinguished by shapes in structure and installation. ​

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