Ultrasonic radar address writing method and device for vehicle machine and storage medium

Abstract

The application provides an ultrasonic radar address writing method and device applied to a vehicle machine and a storage medium. The method comprises the following steps: activating a plurality of ultrasonic radars installed on a vehicle; determining the order in which the plurality of ultrasonic radars are attached according to the change in the aftershock waveform of the plurality of ultrasonic radars caused by the attachment of external objects; matching the order in which the plurality of ultrasonic radars are attached according to the correspondence between the attachment order and the installation position, thereby obtaining the installation position of the plurality of ultrasonic radars; displaying a confirmation prompt message of the installation position of the plurality of ultrasonic radars on the vehicle machine of the vehicle; and after receiving a confirmation instruction input by a user, writing the radar address corresponding to the installation position of each ultrasonic radar in the plurality of ultrasonic radars into the vehicle machine. The application does not require a separate controller or master control sensor, simplifies the wire harness connection, saves costs, can quickly complete the address writing of the ultrasonic radar, and is simple and efficient.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application generally relate to the field of automobile manufacturing technology, and more particularly, to an ultrasonic radar address writing method and device using a car machine and a storage medium. BACKGROUND

[0002] At present, the front-mounted rate of vehicle-mounted ultrasonic radar has reached 100%, and the number of single vehicle installation is 3 to 12. The vehicle-mounted ultrasonic radar is used for monitoring and alarming obstacles within a range of 15-250 cm in front and back of the vehicle due to its high measurement accuracy, stable operation, and temperature compensation function. It greatly avoids the collision risk caused by the blind area of the vehicle and provides convenience for the driver. However, both the ultrasonic radar parking distance control system with host and the ultrasonic radar parking distance control system without host define the installation position (i.e. address ID) of each ultrasonic radar on the vehicle through the definition of wire harness and pin (PIN).

[0003] The controller of the ultrasonic radar parking distance control system with host usually has 20 PINs, and the sensor has 3 PINs. The installation position and matching address of the sensor are confirmed by connecting the wire harness of the PINs of the controller and the signal PINs of the sensor. The ultrasonic radar parking distance control system with host uses a simple structure and low-cost ultrasonic sensor, but needs a controller, and the controller and the sensor are connected one-to-one, which makes the wire harness complex.

[0004] The main control sensor of the ultrasonic radar parking distance control system without host usually has 6-8 PINs, and the other sensors have 4 PINs. The installation position and matching address of the sensor are confirmed by connecting the wire harness of different PINs of the main control sensor and the signal PINs of the other sensors. The main control sensor of the ultrasonic radar parking distance control system without host usually has 6-8 PINs and integrates an MCU (Microprogrammed Control Unit) chip, which is large in size and complex in structure. The slave sensor has 4 PINs to meet the design of wire harness connection with the main control sensor. The ultrasonic radar parking distance control system without host often needs complex design to reduce the demand for the number of PINs of the main control sensor. SUMMARY

[0005] To solve the above problems in the prior art, in a first aspect, embodiments of the present application provide an ultrasonic radar address writing method applied to a vehicle machine, the method comprising: activating a plurality of ultrasonic radars installed on a vehicle; determining an order in which the plurality of ultrasonic radars are attached according to changes in aftershock waveforms of the plurality of ultrasonic radars caused by being attached by external objects; matching the order in which the plurality of ultrasonic radars are attached according to a pre-stored correspondence between attachment orders and installation positions, thereby obtaining installation positions of the plurality of ultrasonic radars; displaying a confirmation prompt message of the installation positions of the plurality of ultrasonic radars on a machine of the vehicle; and writing, after receiving a confirmation instruction input by a user, a radar address corresponding to the installation position of each of the plurality of ultrasonic radars into the machine.

[0006] In some embodiments, the method further comprises: displaying online states of the plurality of ultrasonic radars on the machine; reactivating the plurality of ultrasonic radars and re-executing the steps of determining the attachment order, matching the attachment order, and displaying the confirmation prompt message, after receiving a reactivation instruction input by a user.

[0007] In some embodiments, 3 pins of each of the plurality of ultrasonic radars are respectively connected to a KL15 line, a local interconnect network bus, and a ground wire of the machine.

[0008] In some embodiments, the method is adapted to be executed in an after-sales process of the vehicle.

[0009] In some embodiments, the plurality of ultrasonic radars comprise ultrasonic radars installed on front bumpers and / or rear bumpers of the vehicle.

[0010] In a second aspect, embodiments of the present application provide an ultrasonic radar address writing device applied to a vehicle machine, the device comprising: an activation module configured to activate a plurality of ultrasonic radars installed on a vehicle; an attachment order determination module configured to determine an order in which the plurality of ultrasonic radars are attached according to changes in aftershock waveforms of the plurality of ultrasonic radars caused by being attached by external objects; a matching module configured to match the order in which the plurality of ultrasonic radars are attached according to a pre-stored correspondence between attachment orders and installation positions, thereby obtaining installation positions of the plurality of ultrasonic radars; a prompt module configured to display a confirmation prompt message of the installation positions of the plurality of ultrasonic radars on a machine of the vehicle; and a writing module configured to write, after receiving a confirmation instruction input by a user, a radar address corresponding to the installation position of each of the plurality of ultrasonic radars into the machine.

[0011] In some embodiments, the device further comprises a state display module configured to display the online state of the plurality of ultrasonic radars on the car machine; and a reactivation module configured to reactivate the plurality of ultrasonic radars upon receiving a reactivation instruction input by a user.

[0012] In some embodiments, the three pins of each of the plurality of ultrasonic radars are connected to a KL15 line, a local interconnect network bus and a ground wire of the car machine, respectively.

[0013] In some embodiments, the device is suitable for application in the after-sales process of the vehicle.

[0014] In a third aspect, embodiments of the present application provide a storage medium storing machine-readable instructions which, when executed by a processor, perform the method of any of the above embodiments.

[0015] The application of the ultrasonic radar address writing method, device and storage medium of the car machine according to the embodiments of the present application has the following advantages:

[0016] (1) The ultrasonic radar is activated by the car machine to enter the address learning mode and complete the address writing, and the parking distance control system does not need a separate controller or master sensor. Since the system controller or master sensor is cancelled, the cost is saved;

[0017] (2) The ultrasonic radar can use a simple 3PIN foot ultrasonic sensor, and the system wire harness connection is simple, which simplifies the wire harness arrangement of the ultrasonic parking distance control system, and the simplified wire harness connection also saves cost from another aspect;

[0018] (3) The staff only needs to attach an object (such as a palm) to the surface of the sensor in a specified order for 1s to complete the sensor installation position confirmation and address writing, which saves a lot of working hours and does not require additional tools, and is simple and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and other objects, features and advantages of the embodiments of the present application will be readily understood through reading the detailed description of the embodiments of the present application below, with reference to the accompanying drawings. In the drawings, several embodiments of the present application are shown by way of example and not limitation, in which:

[0020] Figure 1 A flowchart of an ultrasonic radar address writing method of a car machine according to an embodiment of the present application is shown;

[0021] Figure 2 A connection diagram of an ultrasonic radar and a car machine according to an embodiment of the present application is shown;

[0022] Figure 3 A schematic diagram of the bonding process according to an embodiment of the present invention is shown;

[0023] Figure 4 A schematic diagram of the waveform of an ultrasonic radar according to an embodiment of the present invention is shown;

[0024] Figure 5 A schematic diagram of the in-vehicle infotainment display content according to an embodiment of the present invention is shown;

[0025] Figure 6 A block diagram of an ultrasonic radar address writing device for an in-vehicle system according to an embodiment of the present invention is shown.

[0026] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts. Detailed Implementation

[0027] The principles and spirit of the invention will now be described with reference to several exemplary embodiments. It should be understood that these embodiments are given merely to enable those skilled in the art to better understand and implement the invention, and are not intended to limit the scope of the invention in any way.

[0028] In a first aspect, embodiments of the present invention provide a method for writing ultrasonic radar addresses to a vehicle-mounted infotainment system. (See reference...) Figure 1 This illustrates a flowchart of an ultrasonic radar address writing method 100 for an in-vehicle infotainment system according to an embodiment of the present invention. Figure 1 As shown, the method 100 includes steps S101-S105.

[0029] In step S101, multiple ultrasonic radars (or ultrasonic sensors, sensors) installed on the vehicle are activated. These multiple ultrasonic radars may include those installed on the front and rear bumpers of the vehicle. For example, the ultrasonic radars are activated via the operation page of the parking distance control system installed on the vehicle's infotainment system, thereby entering address learning mode.

[0030] refer to Figure 2 This illustrates a schematic diagram of the connection between an ultrasonic radar and a vehicle-mounted system according to an embodiment of the present invention. Figure 2 As shown, each of the multiple ultrasonic radars has three pins connected to the vehicle's KL15 line, the Local Interconnect Network (LIN) bus, and ground (GND) respectively. That is, they are connected in parallel to the KL15, LIN, and GND wiring harness. In practice, depending on the vehicle model configuration, 4 to 12 ultrasonic radars can be installed. The vehicle's infotainment system communicates with the ultrasonic sensors via LIN. The vehicle's infotainment system is connected to CANH (Controller Area Network - High) and CANL (Controller Area Network - Low).

[0031] In step S102, the order in which the plurality of ultrasonic radars are attached is determined according to the aftershock waveform changes of the plurality of ultrasonic radars caused by the attachment of external objects.

[0032] Reference Figure 3 which shows a schematic diagram of an attachment process according to an embodiment of the present application. Taking a 4-channel parking distance control system as an example, the plurality of ultrasonic radars include ultrasonic radars respectively installed at right rear (RR), right middle (RMR), left middle (RML), and left rear (RL) positions of a rear bumper of a vehicle. A maintenance worker attaches an object (for example, a palm) to each of the ultrasonic sensors at the left rear, left middle, right middle, and right rear positions for 1s in sequence. The attachment of the palm causes the aftershock waveform of the ultrasonic sensors to change.

[0033] Reference Figure 4 which shows a schematic diagram of waveforms of ultrasonic radars according to an embodiment of the present application, in which the aftershock waveforms are shortened in the case where the ultrasonic sensors are attached by external objects. By using this feature, the order in which the sensors are attached can be known.

[0034] In step S103, the order in which the plurality of ultrasonic radars are attached is matched according to a correspondence between the order of attachment and the installation positions that are stored in advance, so that the installation positions of the plurality of ultrasonic radars are obtained. Thus, the address information of each ultrasonic radar is defined by the order in which the ultrasonic radars are attached.

[0035] The actual installation positions of the ultrasonic radars are locked by the correspondence between the order in which the ultrasonic radars are attached and the actual installation positions.

[0036] In step S104, a confirmation prompt message of the installation positions of the plurality of ultrasonic radars is displayed on a vehicle machine.

[0037] In step S105, after receiving a confirmation instruction input by a user, a radar address corresponding to the installation position of each of the plurality of ultrasonic radars is written into the vehicle machine. The address learning result is confirmed by the vehicle machine, the address writing is completed, and then the learning mode is exited.

[0038] The ultrasonic radar address writing method using a vehicle machine proposed in the embodiments of the present application can simultaneously complete address learning and writing for sensors of a 4- to 12-channel parking distance control system.

[0039] As one embodiment of the present application, the method can further include displaying online states of the plurality of ultrasonic radars on the vehicle machine, and after receiving a reactivation instruction input by a user, reactivating the plurality of ultrasonic radars and re-executing the steps of determining the order of attachment, matching the order of attachment, and displaying the confirmation prompt message.

[0040] Reference Figure 5 which shows a schematic diagram of a car machine display content according to an embodiment of the present application.

[0041] In Figure 5 In the example of the display content shown, the car machine page displays the address learning result and the ultrasonic radar state, confirms that the radars are all in the online state, and the address learning result is correct, and clicks to confirm the end of address learning. If the radar shows offline, the radar harness and the fault of the radar itself need to be checked. If the radar is normally online, but the address learning result is incorrect, the vehicle needs to be checked for interference obstacles near the ultrasonic radar. After calibration, click to reactivate to perform address learning again.

[0042] As an embodiment of the present application, the method is suitable for performing in the after-sales process of the vehicle. The maintenance personnel only need to use an object (such as a palm) to attach to the sensor surface 1s in a specified order to complete the sensor installation position confirmation and address writing, which saves a lot of working hours and does not require additional tools, simple and efficient.

[0043] The application of the ultrasonic radar address writing method of the car machine according to the embodiments of the present application has the following beneficial effects:

[0044] (1) The ultrasonic radar is activated by the car machine to enter the address learning mode and complete the address writing, and the parking distance control system does not need a separate controller or master sensor, which saves the cost due to the cancellation of the system controller or master sensor;

[0045] (2) The ultrasonic radar can use a simple 3PIN pin ultrasonic sensor, and the system harness connection is simple, which simplifies the harness arrangement of the ultrasonic parking distance control system, and the simplified harness connection also saves the cost from another aspect;

[0046] (3) The staff only needs to use an object (such as a palm) to attach to the sensor surface 1s in a specified order to complete the sensor installation position confirmation and address writing, which saves a lot of working hours and does not require additional tools, simple and efficient.

[0047] In a second aspect, the embodiments of the present application propose an ultrasonic radar address writing device applying a car machine. Reference Figure 6 which shows a block diagram of an ultrasonic radar address writing device applying a car machine according to an embodiment of the present application. As Figure 6 shown, the ultrasonic radar address writing device applying a car machine can include an activation module, a fitting order determination module, a matching module, a prompting module and a writing module.

[0048] The activation module can be used to activate a plurality of ultrasonic radars installed on a vehicle.

[0049] The fitting order determining module can be configured to determine the fitting order of the plurality of ultrasonic radars according to the aftershock waveform changes of the plurality of ultrasonic radars caused by the fitting of the external object.

[0050] The matching module can be configured to match the fitting order of the plurality of ultrasonic radars according to the pre-stored correspondence between the fitting order and the installation position, so as to obtain the installation position of the plurality of ultrasonic radars.

[0051] The prompting module can be configured to display a confirmation prompt message of the installation position of the plurality of ultrasonic radars on the vehicle machine.

[0052] The writing module can be configured to write the radar address corresponding to the installation position of each ultrasonic radar in the plurality of ultrasonic radars into the vehicle machine after receiving the confirmation instruction input by the user.

[0053] As an embodiment of the present application, the device can further include a state display module configured to display the online state of the plurality of ultrasonic radars on the vehicle machine, and a reactivation module configured to reactivate the plurality of ultrasonic radars after receiving the reactivation instruction input by the user.

[0054] As an embodiment of the present application, the three pins of each ultrasonic radar in the plurality of ultrasonic radars are connected to the KL15 line, the local interconnect network bus and the ground wire of the vehicle machine, respectively.

[0055] As an embodiment of the present application, the device is suitable for application in the after-sales process of the vehicle.

[0056] It should be noted that the steps performed by each module in the ultrasonic radar address writing device for vehicle machine correspond one by one to the steps of the ultrasonic radar address writing method for vehicle machine described above, and the specific implementation and technical effects thereof can be referred to the description of the method steps above.

[0057] The embodiments of the present application further propose a storage medium storing machine-readable instructions, which, when executed by a processor, perform the method described in any of the above embodiments.

[0058] The ultrasonic radar address writing method, device and storage medium for vehicle machine proposed by the embodiments of the present application are related to the automobile parking distance control system, and are a technical solution for activating the ultrasonic radar into learning mode by the vehicle machine to complete the radar address writing. The solution saves the separate controller or master control sensor of the parking distance control system, and simplifies the wire harness connection to save costs.

[0059] The foregoing description of implementations of the application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. It is intended that the scope of the application be limited not with this detailed description, but rather by the claims appended hereto.

Claims

1. An ultrasonic wave radar address writing method using a car machine, characterized by, The method comprises: activating a plurality of ultrasonic radars installed on a vehicle; determining the order in which the plurality of ultrasonic radars are attached according to the aftershock waveform changes of the plurality of ultrasonic radars caused by being attached by external objects; matching the order in which the plurality of ultrasonic radars are attached according to a pre-stored correspondence between attachment order and installation position, thereby obtaining the installation positions of the plurality of ultrasonic radars; displaying a confirmation prompt message of the installation positions of the plurality of ultrasonic radars on a vehicle machine of the vehicle; after receiving a confirmation instruction input by a user, writing a radar address corresponding to the installation position of each of the plurality of ultrasonic radars into the vehicle machine.

2. The method of claim 1, wherein, The method further comprises: displaying the online status of the plurality of ultrasonic radars on the vehicle machine; after receiving a reactivation instruction input by a user, reactivating the plurality of ultrasonic radars and re-executing the steps of determining the attachment order, matching the attachment order, and displaying the confirmation prompt message.

3. The method of claim 1, wherein, The three pins of each of the plurality of ultrasonic radars are respectively connected to a KL15 line, a local interconnect network bus, and a ground wire of the vehicle machine.

4. The method of claim 1, wherein, The method is suitable for being executed in an after-sales process of the vehicle.

5. The method of claim 1, wherein, The plurality of ultrasonic radars comprise ultrasonic radars installed on front bumpers and / or rear bumpers of the vehicle.

6. An ultrasonic wave radar address writing apparatus using a car machine, characterized by comprising: The device comprises: an activation module configured to activate a plurality of ultrasonic radars installed on a vehicle; an attachment order determination module configured to determine the order in which the plurality of ultrasonic radars are attached according to the aftershock waveform changes of the plurality of ultrasonic radars caused by being attached by external objects; a matching module configured to match the order in which the plurality of ultrasonic radars are attached according to a pre-stored correspondence between attachment order and installation position, thereby obtaining the installation positions of the plurality of ultrasonic radars; a prompt module configured to display a confirmation prompt message of the installation positions of the plurality of ultrasonic radars on a vehicle machine of the vehicle; a writing module configured to, after receiving a confirmation instruction input by a user, write a radar address corresponding to the installation position of each of the plurality of ultrasonic radars into the vehicle machine.

7. The apparatus of claim 6, wherein, The device further comprises: a state display module configured to display the online status of the plurality of ultrasonic radars on the vehicle machine; a reactivation module configured to, after receiving a reactivation instruction input by a user, reactivate the plurality of ultrasonic radars.

8. The apparatus of claim 6, wherein, The three pins of each of the plurality of ultrasonic radars are respectively connected to a KL15 line, a local interconnect network bus, and a ground wire of the vehicle machine.

9. The apparatus of claim 6, wherein, The device is suitable for being applied in an after-sales process of the vehicle.

10. A storage medium storing machine-readable instructions which, when executed by a processor, perform the method of any one of claims 1-5.

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