Trailer control system, method and device, controller, medium, product and vehicle

Abstract

The invention relates to a trailer control system, method and device, a controller, a medium, a product and a vehicle, the trailer control system comprising a first control module and a second control module is designed, a pull-up resistor is arranged in the first control module, and the first control module is used for obtaining circuit performance parameters of a circuit connected based on the pull-up resistor; determining a circuit connection state according to the circuit performance parameters, and sending the circuit connection state to the second control module; and the second control module is used for acquiring the circuit connection state and carrying out trailer control on the target vehicle based on the circuit connection state. On the basis, the pull-up resistor is additionally arranged on the trailer control system of the vehicle to obtain the circuit connection state, trailer control of the vehicle is carried out according to the circuit connection state, the trailer control related functions of the vehicle are linked, the trailer mode of the vehicle is entered in a non-inductive mode, and meanwhile the user experience is improved.

Description

Technical Field

[0001] The present application relates to the field of trailer control technology, and in particular to a trailer control system, method, device, controller, medium, product and vehicle. Background Art

[0002] Existing vehicles are equipped with a trailer control module and a trailer status switch. After the vehicle is equipped with a trailer, the vehicle determines whether to enter the vehicle's trailer mode by detecting the trailer status switch through the trailer control module. Among them, the trailer status switch may include a trailer small line magnetic switch, a mechanical switch, etc., but due to the complexity and diversity of actual conditions, there are various problems with the trailer status switch, such as low yield rate of the trailer status switch, complex operation of the trailer status switch, etc., which makes it difficult to truly realize the senseless entry into the vehicle's trailer mode, resulting in a poor user experience. Summary of the invention

[0003] Embodiments of the present application provide a trailer control system, method, device, controller, storage medium, computer program product, and vehicle. A pull-up resistor is added to the trailer control system of the vehicle to obtain a circuit connection status, and the vehicle's trailer is controlled according to the circuit connection status, thereby linking the vehicle's trailer control-related functions to achieve seamless entry into the vehicle's trailer mode, while improving the user experience.

[0004] The embodiment of the present application provides a trailer control system, which is applied to a target vehicle and includes:

[0005] a first control module, wherein a pull-up resistor is provided in the first control module, and the first control module is used to obtain a circuit performance parameter based on a circuit connected to the pull-up resistor, determine a circuit connection state according to the circuit performance parameter, and send the circuit connection state to the second control module;

[0006] The second control module is used to obtain the circuit connection status and perform trailer control of the target vehicle based on the circuit connection status.

[0007] The embodiment of the present application provides a trailer control method, which is applied to the above trailer control system, wherein the trailer control system is applied to a target vehicle, including:

[0008] Acquiring a circuit connection state between the target vehicle and a trailer of the target vehicle;

[0009] The trailer is controlled according to the circuit connection state.

[0010] Accordingly, an embodiment of the present application provides a trailer control device, which is applied to the above trailer control system, and the trailer control system is applied to a target vehicle, including:

[0011] an information acquisition unit, used to acquire a circuit connection state between the target vehicle and a trailer of the target vehicle;

[0012] A control unit is used to control the trailer according to the circuit connection state.

[0013] In addition, an embodiment of the present application also provides a controller, including one or more processors and a memory, wherein the memory stores a computer program, and the processor is used to run the computer program in the memory to implement the trailer control method provided in the embodiment of the present application.

[0014] In addition, an embodiment of the present application further provides a storage medium, wherein the storage medium stores a computer program. When the computer program runs on a controller, the computer program is used to enable the controller to execute any trailer control method provided in the embodiment of the present application.

[0015] In addition, an embodiment of the present application also provides a computer program product, including a computer program or instructions, which, when executed by a processor, implements any trailer control method provided in the embodiment of the present application.

[0016] In addition, an embodiment of the present application also provides a vehicle, including the above-mentioned controller.

[0017] In the embodiment of the present application, a trailer control system including a first control module and a second control module is designed, a pull-up resistor is provided in the first control module, the first control module is used to obtain circuit performance parameters based on the circuit connected to the pull-up resistor, determine the circuit connection state according to the circuit performance parameters, and send the circuit connection state to the second control module; the second control module is used to obtain the circuit connection state, and perform trailer control of the target vehicle based on the circuit connection state. Based on this, by adding a pull-up resistor to the trailer control system of the vehicle to obtain the circuit connection state, and perform trailer control of the vehicle according to the circuit connection state, the trailer control-related functions of the vehicle are linked, and the trailer mode of the vehicle can be entered without feeling, while improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of an implementation environment scenario of the trailer control method provided in an embodiment of the present application;

[0020] Figure 2 is a structural schematic diagram of a trailer control system provided by an embodiment of the present application;

[0021] Figure 3 is a structural schematic diagram of a first control module in a trailer control system provided by an embodiment of the present application;

[0022] Figure 4 It is a flow chart of a trailer control method provided by an embodiment of the present application;

[0023] Figure 5 It is a specific flow chart of a trailer control method provided by an embodiment of the present application;

[0024] Figure 6 is a structural schematic diagram of a trailer control device provided by an embodiment of the present application;

[0025] Figure 7 It is a schematic diagram of the structure of a controller provided in one embodiment of the present application. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0027] In addition, the term "plurality" in the embodiments of the present application refers to two or more than two. The terms "first" and "second" in the embodiments of the present application are used to distinguish descriptions and should not be understood as implying relative importance.

[0028] Embodiments of the present application provide a trailer control system, method, device, controller, storage medium, computer program product, and vehicle.

[0029] The trailer control device can be integrated in a controller, which can be a server or a terminal. The controller can be integrated in a trailer control system.

[0030] Among them, the server can be an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, network acceleration services (Content Delivery Network, CDN), as well as big data and artificial intelligence platforms.

[0031] The terminal may be a smart phone, a tablet computer, a laptop computer, a desktop computer, a smart speaker, a smart watch, etc., but is not limited thereto. The terminal and the server may be directly or indirectly connected via wired or wireless communication, and this application does not limit this.

[0032] See also Figure 1 , taking the trailer control device integrated into the controller as an example, Figure 1 The following is a schematic diagram of the implementation scenario of the trailer control method provided in the embodiment of the present application, wherein the controller can be a terminal device, which obtains the circuit connection status between the target vehicle and the trailer of the target vehicle; and controls the trailer according to the circuit connection status. By adding a pull-up resistor to the trailer control system of the vehicle to obtain the circuit connection status, and controlling the trailer of the vehicle according to the circuit connection status, the trailer control-related functions of the vehicle are linked to realize the senseless entry into the trailer mode of the vehicle, while improving the user experience.

[0033] It should be noted that Figure 1 The schematic diagram of the implementation environment scenario of the trailer control method shown is only an example. The implementation environment scenario of the trailer control method described in the embodiment of the present application is to more clearly illustrate the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided by the embodiment of the present application. It is known to those skilled in the art that with the evolution of data processing and the emergence of new business scenarios, the technical solution provided by the present application is also applicable to similar technical problems.

[0034] The solutions provided by the embodiments of the present application are specifically described by the following embodiments. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0035] According to research, when users are camping outdoors, the entire vehicle can no longer meet their additional camping needs (such as cooking, accommodation, etc.). At this time, most users choose to mount an RV to adapt to the diverse environment in the wild to meet their additional needs. When towing an RV, the vehicle's trailer driving mode can ensure that when towing an RV or other products, the vehicle's light signals are synchronized to the RV or towed product. Currently, the rear trailers on the market mainly control the lights on the trailer through the trailer mode on the tractor. The trailer mode receives the tractor's light off status signal to synchronize the driving trailer lights. However, after the existing vehicles are equipped with a trailer, the entire vehicle determines whether to enter the vehicle's trailer mode through the trailer control module and the trailer status switch, and the trailer control module detects the trailer status switch, and then starts to drive the relevant trailer load. Currently, there are the following connection detection solutions: a non-inductive entry solution using a trailer small-line magnetic switch, but the problem of low yield of magnetic switches cannot be solved, and assembly can only be done at the original factory, which is limited by the stability of supply and price changes of the original factory; a mechanical switch operation entry solution is used, but the operation of this solution is cumbersome, and non-inductive entry cannot be achieved, and the mechanical switch causes the cost of the entire vehicle to increase; a non-inductive entry solution using a trailer small-line current detection solution is used, but the problem of low-power equipment being unable to be identified and regulatory certification being unable to be passed cannot be solved; a multimedia device (such as a smart phone, tablet computer, laptop computer, etc.) operation entry solution is used, and the operation is cumbersome, and non-inductive entry cannot be achieved.

[0036] This embodiment will be described from the perspective of a trailer control system, which can achieve instant connection and seamless entry into the trailer mode of the vehicle.

[0037] See also Figure 2 , Figure 2 1 is a schematic diagram of a trailer control system provided in an embodiment of the present application. The trailer control system is applied to a target vehicle, which is a vehicle configured with a trailer mode and can be equipped with a trailer. The trailer control system includes:

[0038] The first control module is provided with a pull-up resistor, and the first control module is used to obtain circuit performance parameters based on the circuit connected to the pull-up resistor, determine the circuit connection state according to the circuit performance parameters, and send the circuit connection state to the second control module.

[0039] The second control module is used to obtain the circuit connection status and perform trailer control of the target vehicle based on the circuit connection status.

[0040] The first control module refers to a module that can be used to control and determine the circuit connection state.

[0041] The circuit connection state includes but is not limited to open circuit, loop, partial connection, etc., which can be specifically determined according to the circuit performance parameters of the circuit connected to the first control module and the pull-up resistor. An open circuit refers to a circuit state when no current flows between two points in a circuit or a conductor with a very large impedance value (or resistance value) is connected. A loop refers to any closed circuit. The electrons in the circuit start from the positive electrode, pass through the entire circuit, the load, and all electrical appliances back to the negative electrode, thus forming a closed loop.

[0042] Among them, circuit performance parameters refer to circuit performance parameters, which are key indicators used to describe and evaluate circuit operating characteristics and efficiency. Circuit performance parameters include but are not limited to voltage, current, power, etc.

[0043] The pull-up resistor is a resistor that fixes an uncertain signal at a high level.

[0044] The pull-up resistor may include a target resistor and a power supply, wherein the target resistor is connected between the power supply and the circuit of the first control module. The target resistor refers to a resistor configured in the pull-up resistor. The power supply refers to a device that provides electrical energy to the circuit connected to the pull-up resistor.

[0045] A pull-up resistor is obtained by connecting a target resistor to the power supply to achieve the goal of fixing the uncertain signal at a high level. At the same time, the target resistor in the pull-up resistor can also play a current limiting role. Figure 3 , Figure 3 Schematic diagram of a structure of the first control module provided in the embodiment of the present application. Figure 3 As shown, the target resistance is Figure 3 107 in the power supply is Figure 3 106 in the embodiment is connected to the power supply through the target resistor to obtain a pull-up resistor.

[0046] It should be noted that the power supply may be an external power supply externally connected to the first control module, or the power supply may be a built-in power supply of the first control module.

[0047] In some embodiments, the first control module further includes an anti-reverse diode connected between the target resistor and the circuit of the first control module.

[0048] It should be noted that the anti-reverse diode is used to protect the circuit and control module to prevent current backflow and damage to the controller.

[0049] The second control module refers to a module used to control the target vehicle and the trailer of the target vehicle.

[0050] The control of the target vehicle includes controlling the target vehicle to start or shut down the trailer mode. The control of the trailer of the target vehicle includes controlling the load (such as light load, sound load equipment, etc.) on the trailer of the target vehicle after the target vehicle starts the trailer mode.

[0051] It should be noted that the first control module and the second control module can be integrated control modules, or the first control module and the second control module can be separately set control modules. The embodiment of the present application uses the first and second only to distinguish their execution contents, and does not limit their specific setting locations.

[0052] It can be seen that the trailer control system provided in the embodiment of the present application includes a first control module and a second control module. A pull-up resistor is provided in the first control module. The first control module is used to obtain circuit performance parameters based on the circuit connected to the pull-up resistor, determine the circuit connection state according to the circuit performance parameters, and send the circuit connection state to the second control module; the second control module is used to obtain the circuit connection state and perform trailer control of the target vehicle based on the circuit connection state. Based on this, by adding a pull-up resistor to the trailer control system of the vehicle to obtain the circuit connection state, and perform trailer control of the vehicle according to the circuit connection state, the trailer control-related functions of the vehicle are linked to realize the senseless entry into the trailer mode of the vehicle, while improving the user experience.

[0053] In some embodiments, the first control module is used to obtain circuit performance parameters at a connection point of a circuit connected to the pull-up resistor, and determine a circuit connection state according to the circuit performance parameters.

[0054] The connection point refers to the point on the circuit to which the pull-up resistor is connected where the circuit performance parameters need to be tested. The connection point can also be understood as a test point. Figure 3 As shown in 109.

[0055] In some embodiments, the circuit performance parameter includes voltage.

[0056] Based on this, the first control module is used to compare the voltage with the voltage threshold, and if the voltage is greater than the voltage threshold, determine that the circuit connection state is an open circuit, otherwise, determine that the circuit connection state is a loop.

[0057] The above voltage threshold setting method can be adjusted according to actual conditions. For example, the voltage threshold is an empirical value or a manually set value. For another example, the voltage threshold is a chip threshold voltage.

[0058] By comparing the voltage with the voltage threshold, the circuit connection state can be quickly determined based on the magnitude relationship between the voltage and the voltage threshold, so that when the circuit connection state is a loop, the trailer mode can be connected and judged immediately for seamless entry.

[0059] In some embodiments, the first control module further includes a collection feedback circuit.

[0060] The acquisition feedback circuit refers to a circuit used to acquire the feedback output current in the circuit indicated by the connection state of the acquisition circuit.

[0061] Feedback current is usually a current signal collected from the output end or an intermediate node of the circuit and is used in feedback control systems.

[0062] Based on this, the first control module is further used to obtain the output current of the acquisition feedback circuit, and determine the circuit connection state according to the circuit performance parameters and the output current.

[0063] In some embodiments, the circuit performance parameter includes voltage.

[0064] Based on this, the above-mentioned first control module is used to compare the voltage with the voltage threshold, and to compare the output current with the output current threshold. If the voltage is greater than the voltage threshold and the output current is not greater than the output current threshold, the circuit connection state is determined to be an open circuit; otherwise, the circuit connection state is determined to be a loop.

[0065] The above-mentioned voltage threshold and output current threshold can be set in a manner that is adjusted according to actual conditions. For example, the voltage threshold and the output current threshold can both be empirical values, or can both be manually set values.

[0066] It should be noted that the value of the output current threshold may be no output current, that is, the current is 0 ampere.

[0067] Specifically, if the voltage is greater than the voltage threshold and the output current is not greater than the output current threshold, the circuit connection state is determined to be open. Alternatively, if the voltage is greater than the voltage threshold and the output current is no output, the circuit connection state is determined to be open.

[0068] By comparing the voltage with the voltage threshold, and the output current with the output current threshold, the circuit connection state can be quickly determined based on the magnitude relationship between the voltage and the voltage threshold, and the magnitude relationship between the output current and the output current threshold, so that when the circuit connection state is a loop, the trailer mode can be connected and judged immediately for seamless entry.

[0069] In some embodiments, the first control module includes a driving output channel circuit; and the circuit to which the pull-up resistor is connected includes the driving output channel circuit.

[0070] The driver output channel circuit refers to the channel in the control module that is involved in transferring the signal or power from the circuit to the load (such as a speaker, display or other device).

[0071] Specifically, the circuit connection state is determined by detecting the circuit performance parameters of the driving output channel circuit at the connection point and according to the circuit performance parameters.

[0072] In some embodiments, the first control module is used to obtain an open circuit detection instruction, and obtain a circuit performance parameter of a circuit connected to the pull-up resistor based on the open circuit detection instruction.

[0073] The above-mentioned acquisition of the open circuit detection instruction may be that the second control module sends the open circuit detection instruction to the first control module, so that the first control module acquires the open circuit detection instruction. The above-mentioned acquisition of the open circuit detection instruction may also be based on certain circuits included in the first control module satisfying the open circuit detection condition, triggering the generation of the open circuit detection instruction.

[0074] Exemplarily, the first control module is used to obtain circuit performance parameters of a circuit connected to the pull-up resistor in response to an output signal of a driving output channel circuit satisfying an open circuit detection condition.

[0075] The open circuit detection condition refers to the condition for controlling and determining the circuit connection state, that is, the detection condition for determining whether the circuit connection state is an open circuit.

[0076] The open circuit detection condition can be set according to actual conditions, and the embodiment of the present application does not limit it. For example, the above open circuit detection condition indicates that the driving output channel circuit has no output.

[0077] In some embodiments, there are multiple driving output channel circuits, and each driving output channel circuit is connected to a pull-up resistor.

[0078] It should be noted that the driving output channel circuit is related to the number of output ports of the control module, and the output ports of the control module are used to connect to the load of the trailer. The number of output ports of the control module is related to the load of the trailer.

[0079] That is, each trailer load is configured with a corresponding driving output channel circuit on the first control module, and the driving output channel circuit is connected to a pull-up resistor.

[0080] In some embodiments, the second control module is used to control the target vehicle to enter the trailer mode in response to the circuit connection state being a loop.

[0081] Specifically, in response to the circuit connection state being a loop, the target vehicle is controlled to enter the trailer mode, and in response to the circuit connection state being an open circuit, the target vehicle is not controlled to enter the trailer mode.

[0082] In some embodiments, the second control module is further used to obtain operating information of the target vehicle, and in response to the circuit connection state being a loop and the operating information satisfying an operating control condition, control the target vehicle to enter a trailer mode.

[0083] The operation information refers to information related to the operation of the target vehicle, such as vehicle speed, vehicle operating gear, vehicle steering angle, etc.

[0084] The operation control condition refers to the restriction condition for controlling the target vehicle to enter the trailer mode based on the operation information.

[0085] The specific content of the operation control conditions is related to the operation information, and can be adjusted according to the operation information and actual conditions, and the embodiments of the present application do not limit this.

[0086] Exemplarily, the above-mentioned operating information includes vehicle speed and / or operating gear.

[0087] Based on this, the above-mentioned operating control conditions may include that the vehicle speed is not greater than a vehicle speed threshold, and / or the operating gear matches the target operating gear.

[0088] The vehicle speed threshold may be an empirical value, or a threshold set manually, or calculated and updated in real time according to the vehicle speed.

[0089] The target operating gear may be an empirical operating gear or a manually set operating gear.

[0090] Combine the following Figure 3 , the first control module of the above-mentioned trailer control system is explained.

[0091] like Figure 3 As shown, the first control module of the trailer control system includes an acquisition feedback circuit 101, a drive input channel circuit 102, a diagnostic detection switch 103, a drive chip power supply 104, a drive output channel 105, a power supply 106, a target resistor 107, an anti-reverse diode 108, a diagnostic detection point 109, a control module output port 110, and a drive output ①.

[0092] The power supply 106 may include a power supply for supplying power to the driver chip and a power supply for constituting a pull-up resistor. The power supply for supplying power to the driver chip and the power supply for constituting the pull-up resistor may be the same power supply or different power supplies.

[0093] In order to achieve the instantaneous entry into the trailer mode, the present application adds a pull-up resistor 107 to the first control module of the trailer control system, so that the driver chip can enter the open circuit detection mode in the non-driving state, or the non-driving state and the collection feedback state, so as to perform loop connection detection, determine whether the trailer is connected, and control the whole vehicle to enter the trailer mode, link related functions, and avoid the problem that the European annual inspection and certification equipment is too low in power to detect.

[0094] It should be noted that the non-driving state refers to the state in which the first control module performs the open circuit detection task but does not perform the driving task. The driving task refers to the task in which there is a driving demand in the trailer control system, and the driving output is realized through the input channel circuit 102 and the driving output channel 105 of the first control module, the control module output port 110 has an output, and the load of the above trailer is driven. The open circuit detection task is also the circuit connection state determination task mentioned in the embodiment of the present application. The acquisition feedback state refers to the state in which the output current is obtained through the acquisition feedback circuit of the first control module.

[0095] Specifically, when there is no driving demand, the driving input channel circuit 102 receives a low level, the control driving chip 104 and 105 are not internally conductive, and the power supply 106 cannot achieve driving output through the circuit 106→104→105, so that the control module output port 110 has no output. When there is a driving demand, the driving input channel circuit 102 receives a high level, the control driving chip 104 and 105 are internally conductive, and the power supply 106 achieves driving output through the current flow of 106→104→105, so that the control module output port 110 has output.

[0096] It should be noted that the first control module performing the open circuit detection task means that the trailer control system has an open circuit diagnosis requirement, and a diagnosis detection switch 103 can be set in the first control module.

[0097] Specifically, when there is no diagnostic requirement, the diagnostic detection switch 103 receives a low level, and the driving output channel 105 cannot perform diagnostic detection through the diagnostic detection point 109; when there is a diagnostic requirement, the diagnostic detection switch 103 receives a high level, and the driving output channel 105 performs diagnostic detection through the diagnostic detection point 109. Figure 3 The first control module shown in the figure uses the existing power supply 106 of the circuit and adds a target resistor 107 and an anti-reverse diode 108 between the diagnostic detection point 109 and the power supply 106 to form a pull-up resistor and add anti-reverse protection, so that the first control module has an open circuit detection mode, and its open circuit detection mode can be used. Specifically, the open circuit detection mode is effective when the drive output channel 105 has no output.

[0098] It should be noted that before adding the pull-up resistor and the circuit connected to the pull-up resistor, the existing driver chip has an open circuit detection mode, but its open circuit detection mode cannot be used. The reason is that if the controller does not have the circuit connected to the pull-up resistor, the driver output channel 105 detects that the voltage of the diagnostic detection point 109 is 0, and the circuit connection state cannot be determined based on the voltage. Therefore, the open circuit detection mode in the existing driver chip has no detection meaning. In the embodiment of the present application, by adding a pull-up resistor in the first control module, the diagnostic detection switch 103 receives a high level, the driver output channel 105 passes the voltage of the diagnostic detection point 109 greater than the voltage threshold, and the control module can determine whether the control module output port 110 is open by collecting the output current of the feedback circuit 101; thereby determining whether there is a load connection at the control module output port 110, and simultaneously covering the European annual inspection certification low-power device identification.

[0099] It is understandable that the existing trailer control solution does not require open circuit detection, so the hardware design does not consider the use of open circuit detection mode. Currently, vehicles with trailer driving mode functions must undergo annual inspection and certification in the country / region where they are sold. Due to differences in certification methods and equipment in various countries, the European annual inspection equipment requirements are the most stringent. Currently, the European annual inspection and certification equipment has low power, and the existing trailer control solution cannot recognize low power, which poses a risk of failing the annual inspection and certification.

[0100] Among them, the driving mode with trailer refers to the scene mode when the passenger car is towing a trailer. It mainly synchronizes the lighting signal of the whole vehicle to the trailer, and adjusts the functions of the whole vehicle system (back door system, lighting system, etc.) to improve the safety and convenience of the whole vehicle when towing the trailer.

[0101] Based on the above situation, we are now considering adding a function to judge the load connection to achieve non-sensing entry. After designing the solution, we add a pull-up resistor on the basis of the existing solution, so that the chip can enter the open circuit detection mode in the non-driving / collection state, so as to perform loop connection detection, judge whether the trailer is connected, and control the whole vehicle to enter the trailer mode, linking related functions, and avoiding the problem that the European annual inspection and certification equipment is too low in power to detect.

[0102] Among them, adding a judgment on the load connection status may include performing an open circuit detection on the circuit corresponding to the load of the above-mentioned trailer (such as a turn signal, a brake light, a rear fog light, a position light or a reversing light, etc.) through the first control module of the above-mentioned target vehicle. If the circuit connection status of the circuit is open, it indicates that the load connection has failed, otherwise, it indicates that the load connection has been successful.

[0103] Compared with the prior art, this application adopts no switch development cost, realizes true non-sensing entry, is simple to operate, meets user operation needs, and can realize intelligent identification of trailer mode. Specifically, the embodiment of this application adopts trailer load connection detection: it has cost advantages, no switch maintenance cost and durability improvement advantages; it adopts trailer load connection detection, does not require multimedia equipment operation entry, has no switch development cost, realizes true non-sensing entry, is simple to operate, and meets user operation needs; it adopts open circuit detection method: enhances anti-interference ability and increases anti-electromagnetic interference ability (Electromagnetic Compatibility, EMC); its prior art is changed to an open circuit detection scheme, and it must also use the existing open circuit detection capability of the chip to increase the pull-up resistor form to achieve it.

[0104] This embodiment will be described from the perspective of a trailer control device, which may be specifically integrated into a controller, and the controller may be a terminal and / or a server, which is not limited in this application.

[0105] See also Figure 4 , Figure 4 It is a flow chart of a trailer control method provided in one embodiment of the present application. The trailer control method is applied to the above-mentioned trailer control system, and the above-mentioned trailer control system is applied to a target vehicle. The target vehicle refers to a vehicle configured with a trailer mode and capable of adding a trailer.

[0106] Specifically, the trailer control method may include the following steps S101 to S102:

[0107] S101. Acquire a circuit connection state between a target vehicle and a trailer of the target vehicle.

[0108] The circuit connection state includes but is not limited to open circuit, loop, partial connection, etc., which can be specifically determined according to the circuit performance parameters of the first control module of the trailer control system and the circuit connected to the pull-up resistor.

[0109] The specific process of obtaining the circuit connection status between the target vehicle and the trailer of the target vehicle can be based on the first control module in the trailer control system to obtain the circuit performance parameters of the circuit connected to the pull-up resistor, and determine the circuit connection status according to the circuit performance parameters.

[0110] S102: Control the trailer according to the circuit connection status.

[0111] Specifically, the trailer control of the target vehicle is performed according to the circuit connection state, and the trailer control is then implemented based on the trailer control of the target vehicle.

[0112] Controlling the trailer may include deactivating the trailer mode of the target vehicle so that the target vehicle does not control the trailer. Controlling the trailer may also include activating the trailer mode of the target vehicle so that the target vehicle controls the trailer.

[0113] For details, please refer to the relevant description of the trailer control system, which will not be repeated here.

[0114] It can be seen that the trailer control method provided in the embodiment of the present application obtains the circuit connection status between the target vehicle and the trailer of the target vehicle; and controls the trailer according to the circuit connection status. By adding a pull-up resistor to the trailer control system of the vehicle to obtain the circuit connection status, and controlling the trailer of the vehicle according to the circuit connection status, the trailer control-related functions of the vehicle are linked to realize the senseless entry into the trailer mode of the vehicle, while improving the user experience.

[0115] In some embodiments, the circuit connection status includes a loop and an open circuit.

[0116] Among them, an open circuit refers to the circuit state when there is no current flowing between two points in the circuit or when a conductor with a very large impedance (or resistance) is connected. A loop refers to any closed circuit. The electrons in the circuit start from the positive electrode and pass through the entire circuit, load, and all electrical appliances back to the negative electrode, thus forming a closed loop.

[0117] Based on this, the above process of controlling the trailer according to the circuit connection status may include: in response to the circuit connection status being a loop, controlling the target vehicle to enter the trailer mode, and controlling the trailer based on the trailer mode; in response to the circuit connection status being an open circuit, not controlling the trailer.

[0118] For details, please refer to the relevant description of the trailer control system, which will not be repeated here.

[0119] In some embodiments, after controlling the trailer based on the trailer mode, the above-mentioned trailer control method also includes: during the process of the trailer towing the target vehicle, controlling the signal output device of the target vehicle, and / or outputting target information to the signal output device corresponding to the trailer, wherein the target information is used to indicate the driving status of the trailer.

[0120] The signal output device includes an indicator of a turn signal lamp, a brake light, a rear fog light, a position light and a reversing light.

[0121] For details, please refer to the relevant description of the trailer control system, which will not be repeated here.

[0122] In some embodiments, the process of controlling the trailer according to the circuit connection status may include: acquiring operation information of the target vehicle; and controlling the trailer according to the operation information and the circuit connection status.

[0123] Operation information refers to information related to the operation of the target vehicle, such as vehicle speed, vehicle operating gear, vehicle steering angle, etc.

[0124] For details, please refer to the relevant description of the trailer control system, which will not be repeated here.

[0125] Combine the following Figure 5 The above trailer control method is explained with a specific embodiment. Figure 5 , the process of the trailer control method may include the following steps:

[0126] S01. Trailer connection detection.

[0127] When the target vehicle is powered on, since the target vehicle has a trailer control mode (ie, trailer mode), a trailer connection detection may be performed on the target vehicle first.

[0128] Specifically, the first control module in the trailer control system can be awakened, and the first control module can monitor the connection status of the trailer cable in real time through open circuit detection. The connection status of the trailer cable can also be monitored in real time by performing current back-check on the corresponding light driving circuit in response to the user turning on the turn signal, brake light, rear fog light, position light or reversing light.

[0129] S02, trailer cable connection.

[0130] Specifically, connect the trailer cable to the trailer power interface reserved for the vehicle, and ensure that the connector is assembled in place, and enter S03.

[0131] Among them, trailer cable refers to a special cable equipment used for the front vehicle to tow the rear vehicle.

[0132] S03. Identify load connection status through the first control module.

[0133] Specifically, the first control module performs trailer load connection identification and controls the drive chip to perform open circuit mode detection. If it is identified that the trailer cable is not connected, it returns to S02; if it is identified that the trailer cable is connected, it enters S04.

[0134] S04, triggering the light self-check, then driving the turn signal light, brake light, rear fog light, position light and reversing light to self-check in sequence, and the first control module sends the trailer cable interface connection signal and light status information to the second control module.

[0135] Specifically, the trailer cable is connected, triggering the trailer mode light self-test. The first control module drives the turn signal, brake light, rear fog light, position light and reversing light to self-test in turn through the control chip. The first control module sends the trailer cable power result connection signal and light status information to the second control module (equivalent to the main control module) according to the light self-test result, and requests to enter the trailer driving mode.

[0136] Among them, the scene mode of the passenger car with trailer driving mode when towing a trailer. It mainly synchronizes the lighting signal of the whole vehicle to the trailer, and adjusts the functions of the whole vehicle system (back door system, lighting system, etc.) to improve the safety and convenience of the whole vehicle when towing the trailer.

[0137] S05. The second control module determines the cable interface signal, the vehicle speed signal, and the gear position signal.

[0138] Specifically, the second control module receives the trailer cable power connection signal, light status information, and a request to enter the trailer driving mode sent by the first control module and makes a judgment, and at the same time judges whether the speed and gear position of the target vehicle meet the requirements.

[0139] S06. Determine whether the gear position is in the P gear and whether the vehicle speed is less than a vehicle speed threshold k.

[0140] Specifically, the second control module determines whether the vehicle speed meets the requirements and whether the gear position meets the requirements.

[0141] If the vehicle speed is less than the vehicle speed threshold k and the gear is in P gear, then the process goes to S07 ; otherwise, the process goes to S06_1 .

[0142] S06_1. The state of the driving mode with trailer remains in the previous state (ie, the exit state).

[0143] Specifically, the second control module determines that the vehicle speed or gear position does not meet the requirements, sends a failure signal for entering the driving mode with trailer to the first control module, and keeps the driving mode with trailer of the vehicle in an exit state or an inactive state.

[0144] S07. The second control module sends a state of the driving mode with trailer to enter the driving mode with trailer.

[0145] Specifically, the second control module determines that the vehicle speed meets the requirement and the gear matches the target gear, then sends a state signal for entering the driving mode with trailer, and switches the vehicle driving mode to the driving mode with trailer.

[0146] S08. Control the lighting synchronization of the front and rear vehicles.

[0147] Specifically, the first control module receives the trailer driving mode status signal sent by the second control module, and controls the front and rear vehicles (the original vehicle and the trailer) to synchronize lights.

[0148] Exemplarily, when the target vehicle turns on the turn signal, the trailer is controlled to turn on the turn signal.

[0149] S08_1. Turn on the light and detect whether the corresponding light pin is short-circuited or open-circuited.

[0150] Specifically, the first control module lights up the corresponding lights of the rear vehicle according to the lighting status of the lights of the original vehicle, and at the same time performs short circuit / open circuit backcheck and judgment on the pins of the rear vehicle lights. The specific process of pin short circuit / open circuit backcheck and judgment can refer to the prior art.

[0151] S08_2. Send the lighting status information to the second control module.

[0152] Specifically, the first control module sends the rear vehicle light status information to the second control module.

[0153] That is, after the lights of the front and rear vehicles are synchronized, the control module of the rear vehicle sends the rear vehicle light status information to the first control module, so that the first control module sends the rear vehicle light status information to the second control module.

[0154] S09. Disconnect the cable.

[0155] Disconnect the trailer cable from the trailer power interface connector reserved for the vehicle.

[0156] S10. Identify, through a first control module, that the trailer load connection is disconnected.

[0157] S11. The first control module sends a trailer power interface disconnection signal to the second control module.

[0158] S12, the second control module receives the trailer cable power interface connection signal and the request to exit the trailer driving mode sent by the first control module and makes a judgment, and at the same time judges whether the speed and gear position of the target vehicle meet the requirements.

[0159] S13, the second control module determines whether the vehicle speed and gear position meet the requirements. If the vehicle speed is less than the vehicle speed threshold and the gear position is in P gear, enter S14; otherwise, enter S13_1.

[0160] S13_1. The second control module determines that the connection of the trailer cable power interface is in an abnormal state, maintains the trailer driving mode state as entering, and sends an abnormal prompt to the display system. The prompt disappears after the trailer is driven forward or backward again.

[0161] S14: The belt-feeding trailer driving mode state of the second control module is exit.

[0162] By adding a pull-up resistor to the vehicle's trailer control system to obtain the circuit connection status, and controlling the vehicle's trailer according to the circuit connection status, the vehicle's trailer control-related functions are linked to achieve seamless entry into the vehicle's trailer mode, while improving the user experience.

[0163] In order to better implement the trailer control method provided in the embodiment of the present application, the embodiment of the present application also provides a device based on the trailer control method. The meanings of the terms are the same as those in the trailer control method, and the specific implementation details can refer to the description in the method embodiment.

[0164] For example, Figure 6 As shown, the trailer control device can be applied to the above trailer control system, and the above trailer control system is applied to the target vehicle. The trailer control device includes an information acquisition unit 301 and a control unit 302, which are as follows:

[0165] An information acquisition unit 301 is used to acquire a circuit connection state between a target vehicle and a trailer of the target vehicle;

[0166] The control unit 302 is used to control the trailer according to the circuit connection status.

[0167] In an embodiment of the present application, the circuit connection state includes a loop and an open circuit.

[0168] Based on this, the control unit 302 includes:

[0169] A first control subunit, configured to control the target vehicle to enter a trailer mode in response to the circuit connection state being a loop, and control the trailer based on the trailer mode;

[0170] The second control subunit is used for not controlling the trailer in response to the circuit connection state being open.

[0171] In one embodiment of the present application, after controlling the trailer based on the trailer mode, the trailer control device further includes:

[0172] The output unit is used to control the signal output device of the target vehicle and / or output target information to the signal output device corresponding to the trailer during the process of the trailer towing the target vehicle, wherein the target information is used to indicate the driving status of the trailer.

[0173] In one embodiment of the present application, the control unit 302 includes:

[0174] An operation information acquisition subunit, used to acquire the operation information of the target vehicle;

[0175] The third control subunit is used to control the trailer according to the operation information and the circuit connection status.

[0176] It can be seen that the trailer control device provided in the embodiment of the present application obtains the circuit connection status between the target vehicle and the trailer of the target vehicle through the information acquisition unit 301; the control unit 302 controls the trailer according to the circuit connection status. By adding a pull-up resistor to the trailer control system of the vehicle to obtain the circuit connection status, and controlling the trailer of the vehicle according to the circuit connection status, the trailer control-related functions of the vehicle are linked to realize the senseless entry into the trailer mode of the vehicle, while improving the user experience.

[0177] In specific implementation, the above modules can be implemented as independent entities, or can be arbitrarily combined and implemented as the same or several entities. The specific implementation methods and corresponding beneficial effects of the above modules can be found in the previous method embodiments, which will not be repeated here.

[0178] The present application also provides a controller, such as Figure 7 As shown, it shows a schematic diagram of the structure of the controller involved in the embodiment of the present application, specifically:

[0179] The controller may include one or more processing core processors 401, one or more storage media memories 402, a power supply 403, an input unit 404 and other components. Those skilled in the art will appreciate that Figure 7 The controller structure shown in the figure does not constitute a limitation on the controller, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. Among them:

[0180] The processor 401 is the control center of the controller, and uses various interfaces and lines to connect various parts of the entire controller. It executes various functions of the controller and processes data by running or executing computer programs and / or modules stored in the memory 402, and calling data stored in the memory 402. Optionally, the processor 401 may include one or more processing cores; preferably, the processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 401.

[0181] The memory 402 can be used to store computer programs and modules. The processor 401 executes various functional applications and trailer control by running the computer programs and modules stored in the memory 402. The memory 402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, a computer program required for at least one function (such as an audio and light prompt function, etc.), etc.; the data storage area may store data created according to the use of the controller, etc. In addition, the memory 402 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 402 may also include a memory controller to provide the processor 401 with access to the memory 402.

[0182] The controller also includes a power supply 403 for supplying power to each component. Preferably, the power supply 403 can be logically connected to the processor 401 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. The power supply 403 can also include any components such as one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators.

[0183] The controller may further include an input unit 404, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0184] Although not shown, the controller may further include a display unit, etc., which will not be described in detail herein. Specifically in this embodiment, the processor 401 in the controller will load the executable files corresponding to the processes of one or more computer programs into the memory 402 according to the following instructions, and the processor 401 will run the computer programs stored in the memory 402, thereby realizing various functions, such as:

[0185] obtaining a circuit connection status between a target vehicle and a trailer of the target vehicle;

[0186] The trailer is controlled according to the circuit connection status.

[0187] It can be seen that the controller provided in the embodiment of the present application obtains the circuit connection status between the target vehicle and the trailer of the target vehicle; and controls the trailer according to the circuit connection status. By adding a pull-up resistor to the trailer control system of the vehicle to obtain the circuit connection status, and controlling the trailer of the vehicle according to the circuit connection status, the trailer control-related functions of the vehicle are linked to realize the senseless entry into the trailer mode of the vehicle, while improving the user experience.

[0188] The specific implementation methods and corresponding beneficial effects of the above operations can be found in the detailed description of the trailer control method above, which will not be elaborated here.

[0189] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be accomplished by a computer program, or by controlling related hardware through a computer program. The computer program may be stored in a storage medium and loaded and executed by a processor.

[0190] To this end, an embodiment of the present application provides a storage medium in which a computer program is stored. The computer program can be loaded by a processor to execute the steps in any trailer control method provided in the embodiment of the present application. For example, the computer program can execute the following steps:

[0191] obtaining a circuit connection status between a target vehicle and a trailer of the target vehicle;

[0192] The trailer is controlled according to the circuit connection status.

[0193] It can be seen that the storage medium provided in the embodiment of the present application obtains the circuit connection status between the target vehicle and the trailer of the target vehicle; and controls the trailer according to the circuit connection status. By adding a pull-up resistor to the trailer control system of the vehicle to obtain the circuit connection status, and controlling the trailer of the vehicle according to the circuit connection status, the trailer control-related functions of the vehicle are linked to realize the senseless entry into the trailer mode of the vehicle, while improving the user experience.

[0194] The specific implementation methods and corresponding beneficial effects of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0195] The storage medium may include: a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0196] Since the computer program stored in the storage medium can execute the steps in any trailer control method provided in the embodiments of the present application, the beneficial effects that can be achieved by any trailer control method provided in the embodiments of the present application can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0197] According to one aspect of the present application, a computer program product or computer program is provided, the computer program product or computer program includes computer instructions, the computer instructions are stored in a storage medium. A processor of a computer device reads the computer instructions from the storage medium, and the processor executes the computer instructions, so that the computer device executes the above trailer control method.

[0198] The embodiment of the present application also provides a vehicle, which includes the above-mentioned trailer control device, or the above-mentioned controller, or the above-mentioned computer program product. The vehicle includes the above-mentioned controller, which controls the above-mentioned target vehicle and the trailer of the target vehicle by executing the above-mentioned trailer control method. For example, the controller obtains the circuit connection status between the target vehicle and the trailer of the target vehicle; and controls the trailer according to the circuit connection status. By adding a pull-up resistor to the trailer control system of the vehicle to obtain the circuit connection status, and controlling the trailer of the vehicle according to the circuit connection status, the trailer control-related functions of the vehicle are linked to achieve seamless entry into the trailer mode of the vehicle, while improving the user experience.

[0199] The specific structure of the vehicle is not limited in this application. The specific implementation methods and corresponding beneficial effects of the above operations of the controller are also applicable to the vehicle, and the details can be found in the detailed description of the trailer control method above, which will not be repeated here.

[0200] The above is a detailed introduction to a trailer control system, method, device, controller, storage medium, computer program product and vehicle provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A trailer control system, characterized in that: The system is applied to a target vehicle, and the system comprises: a first control module, wherein a pull-up resistor is provided in the first control module, and the first control module is used to obtain a circuit performance parameter based on a circuit connected to the pull-up resistor, determine a circuit connection state according to the circuit performance parameter, and send the circuit connection state to the second control module; The second control module is used to obtain the circuit connection status and perform trailer control of the target vehicle based on the circuit connection status.

2. The trailer control system according to claim 1, characterized in that: The first control module is used to obtain circuit performance parameters at a connection point of the circuit connected to the pull-up resistor, and determine the circuit connection state according to the circuit performance parameters.

3. The trailer control system according to claim 1, characterized in that: The circuit performance parameters include voltage; The first control module is used to compare the voltage with a voltage threshold, and if the voltage is greater than the voltage threshold, determine that the circuit connection state is an open circuit; otherwise, determine that the circuit connection state is a loop.

4. The trailer control system according to claim 1, characterized in that: The first control module also includes a collection feedback circuit; The first control module is further used to obtain the output current of the acquisition feedback circuit, and determine the circuit connection state according to the circuit performance parameters and the output current.

5. The trailer control system according to claim 4, characterized in that: The circuit performance parameters include voltage; The first control module is used to compare the voltage with the voltage threshold, and to compare the output current with the output current threshold. If the voltage is greater than the voltage threshold and the output current is not greater than the output current threshold, the circuit connection state is determined to be an open circuit; otherwise, the circuit connection state is determined to be a loop.

6. The trailer control system according to claim 1, characterized in that: The first control module includes a driving output channel circuit; the circuit to which the pull-up resistor is connected includes the driving output channel circuit.

7. The trailer control system according to claim 6, characterized in that: The first control module is used to obtain circuit performance parameters based on the circuit connected to the pull-up resistor in response to the output signal of the driving output channel circuit satisfying an open circuit detection condition.

8. The trailer control system according to claim 7, characterized in that: The open circuit detection condition indicates that the driver output channel circuit has no output.

9. The trailer control system according to claim 6, characterized in that: There are multiple driving output channel circuits, and each driving output channel circuit is connected to a pull-up resistor.

10. The trailer control system according to claim 1, characterized in that: The second control module is used for controlling the target vehicle to enter a trailer mode in response to the circuit connection state being a loop.

11. The trailer control system according to claim 10, characterized in that: The second control module is further used to obtain the operation information of the target vehicle, and in response to the circuit connection state being a loop and the operation information satisfying an operation control condition, control the target vehicle to enter a trailer mode.

12. The trailer control system according to claim 11, characterized in that: The operation information includes vehicle speed and / or operation gear, and the operation control condition includes that the vehicle speed is not greater than a vehicle speed threshold, and / or the operation gear matches a target operation gear.

13. The trailer control system according to any one of claims 1 to 12, characterized in that: The pull-up resistor includes a target resistor and a power supply, and the target resistor is connected between the power supply and the circuit of the first control module.

14. The trailer control system according to claim 13, characterized in that: The power supply is the power supply of the first control module.

15. The trailer control system according to claim 13, characterized in that: The first control module further includes an anti-reverse diode connected between the target resistor and a circuit of the first control module.

16. A trailer control method, characterized in that: Applied to the trailer control system according to any one of claims 1 to 15, the trailer control system is applied to a target vehicle, and the method comprises: Acquiring a circuit connection state between the target vehicle and a trailer of the target vehicle; The trailer is controlled according to the circuit connection state.

17. The trailer control method according to claim 16, characterized in that: The circuit connection state includes a loop and an open circuit; and the controlling of the trailer according to the circuit connection state includes: In response to the circuit connection state being a loop, controlling the target vehicle to enter a trailer mode, and controlling the trailer based on the trailer mode; In response to the circuit connection state being open, the trailer is not controlled.

18. The trailer control method according to claim 17, characterized in that: After controlling the trailer based on the trailer mode, the method further includes: During the process of the trailer towing the target vehicle, the signal output device of the target vehicle is controlled, and / or target information is output to the signal output device corresponding to the trailer, wherein the target information is used to indicate the driving status of the trailer.

19. The trailer control method according to claim 16, characterized in that: The controlling of the trailer according to the circuit connection state includes: Acquiring operation information of the target vehicle; The trailer is controlled according to the operation information and the circuit connection status.

20. A trailer control device, characterized in that: Applied to the trailer control system according to any one of claims 1 to 15, wherein the trailer control system is applied to a target vehicle; the device comprises: an information acquisition unit, used to acquire a circuit connection state between the target vehicle and a trailer of the target vehicle; A control unit is used to control the trailer according to the circuit connection state.

21. A controller, characterized in that: The method comprises one or more processors and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the trailer control method according to any one of claims 16 to 19.

22. A storage medium, characterized in that: The invention comprises a computer program, which is used to make the controller execute the steps of the trailer control method according to any one of claims 16 to 19 when the computer program is run on the controller.

23. A computer program product, characterized in that The method comprises a computer program or an instruction, which, when executed by a processor, implements the steps of the trailer control method according to any one of claims 16 to 19.

24. A vehicle, characterized in that: The vehicle includes a controller as claimed in claim 21.

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