Projection door opening method and device based on CAN communication protocol

Abstract

The invention belongs to the technical field of automobiles, and particularly relates to a projection door opening method and device based on a CAN communication protocol. The method comprises the following steps: waking up a projection door opening module; whether the key is in the vehicle or not is inquired, and the inquiry result that the key is not in the vehicle is sent to the projection door opening module through a CAN signal; opening a treading cursor of the projection door opening module according to the received CAN signal; a treading cursor is treaded, a treading CAN signal is generated and sent to the PLG; judging the state of the tail gate according to the treading CAN signal; if the tail door is in the closed state, a tail door opening signal instruction is sent to the door lock and the electric supporting rod to open the tail door. Effective recognition and visual interaction of user pedal actions can be supported, and the problems that a capacitive foot kicking sensor is low in action recognition rate, user perception is not obvious, and operation is inconvenient are solved.

Description

Technical Field

[0001] The present invention belongs to the field of automobile technology, and in particular relates to a projection door opening method and device based on a CAN communication protocol. Background Art

[0002] The capacitive kick sensors on the market currently have problems with insensitive recognition of foot sweeping movements and poor convenience of human-computer interaction. Based on this, it is urgent to develop a new method and device for contactless opening of the rear tailgate of a car by stepping on the projection cursor. However, the following difficulties were found in the actual development process of projection door opening technology: 1. It is difficult for the projection door opening module to effectively identify the stepping action and determine the effective stepping range, which is prone to false touches and frequent door openings; 2. It is necessary to define the dormant wake-up function and strategy of the projection door opening module in the vehicle network environment, as well as the active wake-up function and strategy of the projection door opening module in the dormant environment of the vehicle. Summary of the invention

[0003] In response to the above problems, the present disclosure provides a projection door opening device based on the CAN communication protocol, wherein the device includes a projection door opening module, wherein the projection door opening module is respectively connected to the PLG and the PEPS through CAN communication, the PLG is connected to the electric support rod and the suction lock, and the PLG and the PEPS are both connected to a switch.

[0004] Preferably, the projection door opening module includes an MCU and an antenna, and the MCU is connected to an LED projection lamp and a TOF sensor.

[0005] The present disclosure also proposes a projection door opening method based on the CAN communication protocol, the method comprising:

[0006] Wake up the projection door opening module;

[0007] Check whether the key is in the car, and send the query result that the key is not in the car to the projection door opening module via CAN signal;

[0008] Turn on the stepping cursor of the projection door opening module according to the received CAN signal;

[0009] Step on the stepping cursor to generate a stepping CAN signal and send it to PLG;

[0010] Determine the tailgate status based on the CAN signal of stepping on it;

[0011] If the tailgate is in the closed state, a tailgate opening signal command is sent to the door lock and the electric support arm to open the tailgate.

[0012] Preferably, the projection door opening module for waking up includes:

[0013] Receive information about the car key being near the car through PEPS;

[0014] Based on the received information that the car key is near the car, PEPS is used to query whether the car key is near the tailgate;

[0015] Determining whether the vehicle speed is less than or equal to a first vehicle speed;

[0016] If the vehicle speed is less than or equal to the first vehicle speed, a wake-up CAN signal is sent to the projection door opening module.

[0017] Preferably, the wake-up projection door opening module further includes:

[0018] It senses people's leg signals and automatically wakes up the projection door opening module based on the people's leg signals.

[0019] Preferably, if the tailgate is in an open state, the method includes:

[0020] determining whether the vehicle speed is less than or equal to a first vehicle speed according to the opening state of the tailgate;

[0021] If the vehicle speed is less than or equal to the first vehicle speed, determining whether the tailgate is opened to a set height;

[0022] If the tailgate opens to the set height, a tailgate closing command is sent to the door lock and electric support bar to complete the tailgate closing.

[0023] Preferably, when the vehicle speed is greater than the first vehicle speed, the method includes:

[0024] Sending the judgment result that the vehicle speed is greater than the first vehicle speed to the projection door opening module via a CAN signal;

[0025] The projection door opening module is closed according to the CAN signal that the vehicle speed is greater than the first vehicle speed.

[0026] Preferably, when the tailgate is not opened to the set height, the steps include:

[0027] According to the judgment result that the tailgate is not opened to the set height, judging whether the tailgate is in a moving state;

[0028] If the tailgate is in motion, a tailgate static signal is sent to the door lock and electric support bar to statically stop the tailgate;

[0029] or,

[0030] If the tailgate is stationary, a signal is sent to the door lock and electric support bar that the tailgate moves in the opposite direction to the stationary state;

[0031] According to the movement signal of the tailgate in the opposite direction before it comes to a standstill, the door lock and the electric support rod are given to complete the movement of the tailgate in the opposite direction before it comes to a standstill.

[0032] The present disclosure also provides an electronic device, comprising:

[0033] Processor and memory;

[0034] The processor calls the computer program stored in the memory to execute any one of the above-mentioned projection door opening methods based on the CAN communication protocol.

[0035] The present disclosure also provides a computer-readable storage medium,

[0036] The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor is enabled to execute any one of the above-mentioned projection door opening methods based on the CAN communication protocol.

[0037] The present disclosure has the following beneficial effects:

[0038] The present invention can support effective recognition and visual interaction of user foot movements, and solve the problems of low recognition rate of capacitive kicking sensors, unclear user perception, and inconvenient operation.

[0039] Other features and advantages of the present disclosure will be described in the following description, and partly become apparent from the description, or be understood by implementing the present disclosure. The purpose and other advantages of the present disclosure can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 A diagram showing a projection door opening method based on the CAN communication protocol in an embodiment of the present disclosure is shown;

[0042] Figure 2 A diagram of a projection door opening device based on the CAN communication protocol in an embodiment of the present disclosure is shown;

[0043] Figure 3 The installation position of the projection door opening module in the embodiment of the present disclosure is shown;

[0044] Figure 4 A flowchart of waking up the projection door opening module in an embodiment of the present disclosure is shown;

[0045] Figure 5 A flow chart of opening and closing the tailgate in an embodiment of the present disclosure is shown;

[0046] Figure 6 A diagram of an electronic device in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0047] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as being limited to the examples set forth herein; on the contrary, these embodiments are provided so that the present disclosure will be more comprehensive and complete, and the concepts of the example embodiments are fully conveyed to those skilled in the art. The described features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known technical solutions are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0048] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware units or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0049] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the steps. For example, some steps may be decomposed, while some steps may be combined or partially combined, so the actual execution order may change according to the actual situation.

[0050] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0051] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or sub-modules is not necessarily limited to those steps or sub-modules explicitly listed, but may include other steps or sub-modules not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0052] like Figure 1As shown, the present disclosure proposes a projection door opening method based on the CAN communication protocol, the method comprising:

[0053] S1, wake up the projection door opening module;

[0054] S2, query whether the key is in the car, and send the query result that the key is not in the car to the projection door opening module via a CAN signal;

[0055] S3, turning on the stepping cursor of the projection door opening module according to the received CAN signal;

[0056] S4, step on the stepping cursor, generate a stepping CAN signal, and send it to PLG (Power Lift-Gate);

[0057] S5, judging the tailgate status according to the stepping CAN signal;

[0058] S6: If the tailgate is in the closed state, a tailgate opening signal command is sent to the door lock and the electric support rod to open the tailgate.

[0059] In this embodiment, the reason for setting S1 is: in order to effectively define the stepping range and reduce the problem of frequent door opening caused by accidental touch, a sleep mode is set for the projection door opening module. Therefore, before the door opening operation, the projection door opening module needs to be awakened.

[0060] like Figure 4 As shown, S1, the wake-up projection door opening module includes:

[0061] A1. Receive information about the key being near the car through PEPS (Passive Entry Passive Start-keyless system);

[0062] A2. Based on the received information that the car key is near the car, use PEPS to query whether the car key is near the tailgate;

[0063] A3. determining whether the vehicle speed is less than or equal to a first vehicle speed;

[0064] A4. If the vehicle speed is less than or equal to the first vehicle speed, a wake-up CAN signal is sent to the projection door opening module.

[0065] The operations of waking up the projection door opening module in the above steps A1-A4 are applicable to the state when the whole vehicle is armed.

[0066] The above-mentioned step A2 and step A3 can be performed simultaneously or sequentially, and the present disclosure does not limit the order of these two steps.

[0067] In step A3, the first vehicle speed is exemplarily 3 km / h. The first vehicle speed may also be set to other values, such as 1 km / h, 2 km / h, 4 km / h, etc. The present invention does not impose any specific limitation on the value.

[0068] In step A3, when the PLG determines that the vehicle speed is greater than the first vehicle speed, the PLG does not send a wake-up CAN signal to the projection door opening module, that is, the projection door opening module is still in a dormant state and has not awakened.

[0069] Specifically, S1, the projector door opening module further includes:

[0070] B. Sense the human leg signal and automatically wake up the projection door opening module based on the human leg signal.

[0071] The operation of waking up the projection door opening module in step B is applicable to the case where the projection door opening module is automatically dormant, such as the automatic dormancy of the projection door opening module in the tailgate opening gap or the automatic dormancy of the projection door opening module in the tailgate closing gap.

[0072] In S3, when the key is in the car, the PEPS does not send a CAN signal to the projection door opening module; that is, when the key is in the car, the projection door opening module does not work.

[0073] like Figure 5 As shown, S6, if the tailgate is in the open state, includes:

[0074] C1. judging whether the vehicle speed is less than or equal to a first vehicle speed according to the opening state of the tailgate;

[0075] C2. If the vehicle speed is less than or equal to the first vehicle speed, determine whether the tailgate is opened to a set height;

[0076] C3. If the tailgate opens to the set height, a tailgate closing command is sent to the door lock and electric support bar to complete the tailgate closing.

[0077] Specifically, C2, when the vehicle speed is greater than the first vehicle speed, includes:

[0078] D1, sending the judgment result that the vehicle speed is greater than the first vehicle speed to the projection door opening module via a CAN signal;

[0079] D2. Turn off the projection door opening module according to the CAN signal that the vehicle speed is greater than the first vehicle speed.

[0080] After step D2, the PLG continues to determine whether the vehicle speed is less than or equal to the first vehicle speed until the vehicle speed is less than or equal to the first vehicle speed. The PLG sends the determination result to the projection door opening module via a CAN signal, and the projection door opening module is started according to the signal.

[0081] Specifically, C2, when the tailgate is not opened to the set height, it includes:

[0082] E1. judging whether the tailgate is in motion according to the judgment result that the tailgate is not opened to the set height;

[0083] E2: If the tailgate is in motion, send a tailgate static signal to the door lock and electric support rod to statically stop the tailgate;

[0084] or,

[0085] E2. If the tailgate is in a stationary state, a signal for the tailgate to move in the opposite direction before it is stationary is sent to the door lock and the electric support rod; according to the signal for the tailgate to move in the opposite direction before it is stationary, the door lock and the electric support rod are sent to complete the movement of the tailgate in the opposite direction before it is stationary.

[0086] In certain embodiments of the present invention, in order to reduce the power consumption of the projection door opening module, the projection door opening module automatically sleeps after being turned on for a period of time, and the automatic sleep conditions include the tailgate closing gap and the tailgate opening gap.

[0087] In the tailgate closing gap scenario, the projection door opening method further includes:

[0088] After the tailgate is closed and the first preset time is reached, the projection door opening module automatically goes into sleep mode.

[0089] In the embodiment of the present invention, the first preset time is exemplarily 20 seconds, and the present invention does not limit the specific value of the first preset time.

[0090] In the tailgate opening gap scenario, the projection door opening method further includes:

[0091] After the tailgate is opened and reaches the second preset time, the projection door opening module automatically goes into sleep mode.

[0092] In the embodiment of the present invention, the second preset time is illustratively 2 minutes, and the present invention does not limit the specific value of the second preset time.

[0093] Through the settings of steps C1-C3, steps D1-D2, and steps E1-E2, the door opening strategy of the projection door opening module is taken into consideration when the customer accidentally steps on the cursor during the door opening process or when the door opening action is completed, thereby further improving the working efficiency of the projection door opening module when an accidental touch occurs.

[0094] In some embodiments of the present invention, the projection door opening module is installed below the rear guard ( Figure 3 As shown in a), near the license plate light ( Figure 3 (shown in b) or below the sliding door ( Figure 3 (as shown in c).

[0095] like Figure 2 As shown, the present disclosure also proposes a projection door opening device based on the CAN communication protocol, the device includes a projection door opening module, the projection door opening module is respectively connected to the PLG and PEPS through CAN communication, the PLG is connected to the electric support rod and the suction lock, and the PLG and the PEPS are both connected to the switch.

[0096] Specifically, the projection door opening module includes an MCU and an antenna, and the MCU is connected to an LED projection lamp and a TOF sensor.

[0097] like Figure 6 As shown, corresponding to the projection door opening method based on the CAN communication protocol provided above, the present disclosure also provides an electronic device. Since the embodiment of the device is similar to the above method embodiment, the description is relatively simple. Please refer to the description of the above method embodiment for relevant details. The device described below is only schematic. The device may include: a processor 1, a memory 2, a communication bus (i.e., the above device bus) and a search engine, wherein the processor 1 and the memory 2 communicate with each other through the communication bus and communicate with the outside through the communication interface. The processor 1 can call the logic instructions in the memory 2 to execute the projection door opening method based on the CAN communication protocol.

[0098] In addition, the logic instructions in the above-mentioned memory 2 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present disclosure is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: a storage chip, a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk, and other media that can store program codes.

[0099] On the other hand, an embodiment of the present disclosure further provides a processor-readable storage medium, on which a computer program 3 is stored. When the computer program 3 is executed by the processor 1, it is implemented to execute the projection door opening method based on the CAN communication protocol provided in the above-mentioned embodiments.

[0100] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor 1, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0101] Those skilled in the art should understand that although the present disclosure is described in detail with reference to the aforementioned embodiments, it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A projection door opening device based on CAN communication protocol, characterized in that: The device comprises a projection door opening module, which is respectively connected to the PLG and the PEPS through CAN communication, the PLG is connected to the electric support rod and the suction lock, and the PLG and the PEPS are both connected to a switch.

2. The projection door opening device based on CAN communication protocol according to claim 1 is characterized in that: The projection door opening module includes an MCU and an antenna, and the MCU is connected to an LED projection lamp and a TOF sensor.

3. A projection door opening method based on CAN communication protocol, characterized in that: Applied to the device according to any one of claims 1 to 2, the method comprises: Wake up the projection door opening module; Check whether the key is in the car, and send the query result that the key is not in the car to the projection door opening module via CAN signal; Turn on the stepping cursor of the projection door opening module according to the received CAN signal; Step on the stepping cursor to generate a stepping CAN signal and send it to PLG; Determine the tailgate status based on the CAN signal of stepping on it; If the tailgate is in the closed state, a tailgate opening signal command is sent to the door lock and the electric support arm to open the tailgate.

4. The projection door opening method based on CAN communication protocol according to claim 3 is characterized in that: The wake-up projection door opening module includes: Receive information about the car key being near the car through PEPS; Based on the received information that the car key is near the car, PEPS is used to query whether the car key is near the tailgate of the car; and whether the vehicle speed is less than or equal to the first vehicle speed; If the vehicle speed is less than or equal to the first vehicle speed, a wake-up CAN signal is sent to the projection door opening module.

5. The projection door opening method based on CAN communication protocol according to claim 3 is characterized in that: The projection door opening module for waking up further includes: It senses people's leg signals and automatically wakes up the projection door opening module based on the people's leg signals.

6. The projection door opening method based on CAN communication protocol according to claim 3 is characterized in that: If the tailgate is in the open state, it includes: determining whether the vehicle speed is less than or equal to a first vehicle speed according to the opening state of the tailgate; If the vehicle speed is less than or equal to the first vehicle speed, determining whether the tailgate is opened to a set height; If the tailgate opens to the set height, a tailgate closing command is sent to the door lock and electric support bar to complete the tailgate closing.

7. The projection door opening method based on CAN communication protocol according to claim 6 is characterized in that: When the vehicle speed is greater than the first vehicle speed, the method includes: Sending the judgment result that the vehicle speed is greater than the first vehicle speed to the projection door opening module via a CAN signal; The projection door opening module is closed according to the CAN signal that the vehicle speed is greater than the first vehicle speed.

8. The projection door opening method based on CAN communication protocol according to claim 6 is characterized in that: When the tailgate is not opened to the set height, the following steps are performed: According to the judgment result that the tailgate is not opened to the set height, it is judged whether the tailgate is in a moving state; if the tailgate is in a moving state, a tailgate static signal is sent to the door lock and the electric support rod to complete the tailgate static state; or, If the tailgate is stationary, a signal is sent to the door lock and electric support bar that the tailgate moves in the opposite direction to the stationary state; According to the movement signal of the tailgate in the opposite direction before it comes to a standstill, the door lock and the electric support rod are given to complete the movement of the tailgate in the opposite direction before it comes to a standstill.

9. An electronic device, characterized in that: include: Processor and memory; The processor calls the computer program stored in the memory to execute the projection door opening method based on the CAN communication protocol as described in any one of claims 3 to 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor is enabled to execute the projection door opening method based on the CAN communication protocol as described in any one of claims 3 to 8.

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