Vehicle tail lamp detection circuit and detection method

Abstract

The invention provides a vehicle tail lamp detection circuit and detection method, and relates to the field of automobile electronic control. The method comprises the steps that in response to a vehicle lamp control instruction, the on-off states of multiple paths of tail lamps are controlled according to the vehicle lamp control instruction, and working signals of the multiple paths of tail lamps in the on-off states are obtained; performing signal collection on the multiple paths of working signals to generate pulse signals; the pulse signals are recognized, the diagnosis circuit is controlled to output the detection result signals, and the number of the first output channels occupied by the pulse signals is smaller than that of the second output channels occupied by the multiple taillights. According to the method provided by the invention, the signals of the multiple tail lamps can be subjected to signal collection to generate the pulse signals, so that the working signals of the multiple tail lamp signals can occupy less feedback paths and corresponding diagnosis feedback lines, and the working conditions of the tail lamps can be quickly confirmed by detecting the pulse signals in the corresponding feedback paths; the resource occupation condition is reduced, and the design cost of the lamp is reduced.

Description

Technical Field

[0001] The present application relates to the field of automotive electronic control, and in particular to a vehicle taillight detection circuit and detection method. Background Art

[0002] The taillights of a vehicle refer to the indicator lights installed at the rear of the vehicle to warn the following vehicles. The taillights of a vehicle include steering lights, reverse lights, fog lights and other taillights. In order to ensure the safe driving of the vehicle, existing vehicles are equipped with corresponding detection circuits for the taillights of the vehicle to detect the normal operation of the taillights.

[0003] However, currently, when realizing the function of taillight detection, each taillight is connected to a diagnostic feedback line to realize diagnostic feedback. This detection method occupies more diagnostic feedback lines and related resources of the headlight controller, increasing the cost of lamp circuit design. Summary of the invention

[0004] In view of this, the present application provides a vehicle taillight detection circuit and detection method, the main purpose of which is to solve the problem that when realizing the taillight detection function, a diagnostic feedback line needs to be connected to each taillight to realize diagnostic feedback.

[0005] To achieve the above-mentioned purpose, the first aspect of the present application discloses a vehicle taillight detection circuit, which includes: a vehicle light controller, a diagnostic circuit, multiple taillights and multiple constant current chips;

[0006] The multiple constant current chips are connected to the multiple taillights one by one, respectively, for receiving a light control instruction, controlling the on / off state of the multiple taillights according to the light control instruction, and obtaining working signals of the multiple taillights in the on / off state;

[0007] The vehicle light controller is connected to the multiple constant current chips, and is used to obtain multiple working signals, and aggregate the multiple working signals to generate a pulse signal;

[0008] The diagnostic circuit is connected to the vehicle light controller and is used to identify the pulse signal and output a detection result signal. The number of first output channels occupied by the pulse signal is less than the number of second output channels occupied by the multiple tail lights.

[0009] Optionally, the diagnostic circuit includes: a first NMOS tube, a first capacitor, a first resistor, a second resistor and a third resistor;

[0010] The input end of the diagnostic circuit is used to obtain the working signal from the vehicle light controller, the first end of the first resistor serves as the input end of the diagnostic circuit, the second end of the first resistor is connected to the first end of the first capacitor, the second end of the first capacitor is connected to the first end of the second resistor, the second end of the first capacitor is grounded, the second end of the second resistor is connected to the source of the first NMOS tube, the second end of the first resistor is connected to the gate of the first NMOS tube, the drain of the first NMOS tube passes through the third resistor as the output end of the diagnostic circuit, and outputs the diagnostic signal.

[0011] Optionally, the multi-way taillights include at least one of: position lights, turn lights, fog lights, reversing lights and automatic auxiliary driving lights.

[0012] Optionally, the first output channel includes: a first feedback channel, a second feedback channel and a third feedback channel;

[0013] The first feedback channel is used to output a first pulse signal representing a turn signal;

[0014] The second feedback channel is used to output a second pulse signal of a combination of a clearance light signal and a fog light signal;

[0015] The third feedback channel is used to output a third pulse signal of the reversing light signal and the automatic auxiliary driving light signal set.

[0016] The second aspect of the present application discloses a vehicle taillight detection method, comprising:

[0017] In response to a vehicle light control instruction, controlling the on / off state of the multiple tail lights according to the vehicle light control instruction, and obtaining working signals of the multiple tail lights in the on / off state;

[0018] Performing signal aggregation on the multiple working signals to generate a pulse signal;

[0019] The control diagnosis circuit identifies the pulse signal and outputs a detection result signal, and the number of first output channels occupied by the pulse signal is less than the number of second output channels occupied by the multi-channel taillights.

[0020] Optionally, the aggregating the multiple working signals to generate a pulse signal includes:

[0021] The turn signal diagnostic signal is used as the first pulse signal;

[0022] Aggregating the clearance lamp signal and the fog lamp signal to generate a second pulse signal;

[0023] The reversing light signal and the automatic assisted driving ADAS light signal are aggregated to generate a third pulse signal.

[0024] Optionally, the first output channel includes a first feedback channel, a second feedback channel and a third feedback channel;

[0025] Before the control diagnosis circuit identifies the pulse signal working signal and outputs the diagnosis result signal, the method further includes:

[0026] Transmitting a first pulse signal in the first feedback channel;

[0027] transmitting a second pulse signal in the second feedback channel;

[0028] Transmitting a third pulse signal in the third feedback channel;

[0029] The control diagnosis circuit identifies the pulse signal and outputs a detection result signal, including:

[0030] The control diagnosis circuit identifies the multiple pulse signals and outputs a detection result signal.

[0031] Optionally, controlling the diagnostic circuit to identify the multiple pulse signals and outputting a detection result signal includes:

[0032] confirming a feedback path corresponding to the pulse signal, wherein the feedback path is at least one of the first feedback channel, the second feedback channel, and the third feedback channel;

[0033] Controlling the diagnostic circuit to identify the working pulse of the pulse signal in the feedback path;

[0034] If the voltage value of the working pulse does not exceed the preset voltage value, the output detection result is a normal detection result signal.

[0035] Optionally, after the control diagnosis circuit identifies the working pulse of the pulse signal, the method further includes:

[0036] If the voltage value of the working pulse exceeds the preset voltage value, it is confirmed that the taillight corresponding to the feedback path is working abnormally;

[0037] The control diagnosis circuit identifies the duty cycle and voltage period of the working pulse in the feedback path as a voltage identification result;

[0038] The type of the tail lamp that is working abnormally is determined according to the voltage identification result.

[0039] In a third aspect of the present application, an electronic device is provided, including:

[0040] At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute any one of the methods disclosed in the second aspect.

[0041] In a fourth aspect of the present application, an embodiment provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the method described in the second aspect is implemented.

[0042] In a fifth aspect embodiment of the present application, a vehicle is provided, in which the vehicle taillight diagnostic circuit as described in the first aspect or the electronic device as described in the third aspect is mounted.

[0043] In summary, according to the technical solution disclosed in the present application, by responding to the headlight control instruction, the on and off states of multiple taillights are controlled according to the headlight control instruction, and the working signals of the multiple taillights in the on and off states are obtained; the multiple working signals are signaled together to generate a pulse signal; the diagnostic circuit is controlled to identify the pulse signal and output the detection result signal, and the number of first output channels occupied by the pulse signal is less than the number of second output channels occupied by the multiple taillights. Through the method proposed in the present application, the signals of multiple taillights can be signaled together to generate a pulse signal, so that the working signals of the multiple taillight signals can occupy less feedback paths and corresponding detection feedback lines, and the working conditions of the headlights can be quickly confirmed by identifying the pulse signals in the corresponding feedback paths, thereby reducing resource occupation and the design cost of the lamps.

[0044] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0046] In order to more clearly illustrate the embodiments of the present application 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0047] Figure 1 A schematic diagram of a vehicle taillight detection circuit provided in an embodiment of the present application is shown;

[0048] Figure 2 A structural diagram of a diagnostic circuit provided in an embodiment of the present application is shown;

[0049] Figure 3 A flow chart of a vehicle taillight detection method provided in an embodiment of the present application is shown;

[0050] Figure 4 A structural diagram of a vehicle taillight detection device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0051] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0055] In order to solve the problem that the display screen played by the vehicle-mounted device is difficult for the user to recognize due to the shaking of the vehicle during driving, the present application provides the following embodiments to solve the above problem:

[0056] This embodiment provides a schematic diagram of a vehicle taillight diagnostic circuit. Figure 1 As shown, the taillight detection circuit may include: a headlight controller, a diagnostic circuit, multiple taillights and multiple constant current chips; the multiple constant current chips are respectively connected to the multiple taillights one by one, for receiving headlight control instructions, controlling the on and off states of the multiple taillights according to the headlight control instructions, and obtaining working signals of the multiple taillights when they are in the on and off states; the headlight controller is connected to the multiple constant current chips, for obtaining multiple working signals, and aggregating the multiple working signals to generate pulse signals; the diagnostic circuit is connected to the headlight controller, for identifying the pulse signal, and outputting the detection result signal, and the number of the first output channels occupied by the pulse signal is less than the number of the second output channels occupied by the multiple taillights.

[0057] like Figure 1 In the circuit shown, after the vehicle light control instruction is filtered and processed by the step-down constant voltage module chip, the constant current chip is controlled to control the on and off state of multiple tail lights respectively. Among them, exemplarily, the vehicle light control instruction is for controlling the on and off state of at least one of the clearance lights, turn lights, fog lights, reversing lights and automatic auxiliary driving lights. At the same time, while controlling the on and off of multiple tail lights, the constant current chip obtains the working signals of the multiple tail lights and transmits the working signals to the vehicle light controller MCU. The vehicle light controller aggregates the working signals, generates pulse signals, and sends the pulse signals to the diagnostic circuit for diagnosis. The diagnostic circuit provides diagnostic feedback on the recognition results of the corresponding pulse signals. The circuit of this embodiment is used to aggregate the working signals so that the working signals of the multiple tail lights can occupy less resources and reduce the design cost of the lamps.

[0058] In one possible embodiment, the diagnostic circuit, such as Figure 2 As shown, Figure 2 A structural diagram of a diagnostic circuit provided in an embodiment of the present application is shown, including: a first NMOS tube Q, a first capacitor C, a first resistor R1, a second resistor R2 and a third resistor Rn; the input end of the diagnostic circuit is used to obtain a working signal from the I / O port of the vehicle light controller MCU, the first end of the first resistor R1 serves as the input end of the diagnostic circuit, the second end of the first resistor R1 is connected to the first end of the first capacitor C, the second end of the first capacitor C is connected to the first end of the second resistor R2, the second end of the first capacitor C is grounded, the second end of the second resistor R2 is connected to the source of the first NMOS tube Q, the second end of the first resistor R1 is connected to the gate of the first NMOS tube Q, the drain of the first NMOS tube Q passes through the third resistor Rn as the output end of the diagnostic circuit, and outputs a diagnostic signal.

[0059] In a possible embodiment, the multi-way taillights include at least one of: a clearance light, a turn signal light, a fog light, a reversing light, and an automatic auxiliary driving light.

[0060] In a possible embodiment, the first output channel includes: a first feedback channel, a second feedback channel and a third feedback channel;

[0061] The first feedback channel is used to output a first pulse signal representing a turn signal;

[0062] The second feedback channel is used to output a second pulse signal of the clearance light signal and the fog light signal;

[0063] The third feedback channel is used to output a third pulse signal of the reversing light signal and the automatic auxiliary driving light signal set.

[0064] This embodiment provides a vehicle taillight detection method, such as Figure 3 As shown, a flow chart of a vehicle taillight diagnosis method provided by an embodiment of the present application is shown, including:

[0065] Step 301, in response to a vehicle light control instruction, controlling the on / off state of multiple tail lights according to the vehicle light control instruction, and obtaining working signals of the multiple tail lights when they are in the on / off state;

[0066] Step 302, performing signal aggregation on multiple working signals to generate a pulse signal;

[0067] Step 303, controlling the diagnosis circuit to identify the pulse signal and outputting a detection result signal, wherein the number of first output channels occupied by the pulse signal is smaller than the number of second output channels occupied by the multiple tail lights.

[0068] In the content of this embodiment, before the pulse signal is identified, the content of this embodiment further explains the relevant instructions for signal aggregation of multiple working signals, that is, the pulse signal generated by the multiple working signals after the signal aggregation is transmitted through a transmission path less than the number of taillights of the multiple taillights, and the subsequent signal identification is also to perform corresponding signal diagnosis based on the pulse signal in the transmission path, so as to confirm the detection result of the taillight. The technical solution proposed in this embodiment can effectively reduce the transmission channel of the working signal, reduce resource occupation, and reduce the design cost of the vehicle taillight detection circuit under the premise of realizing the judgment of the working state of the taillight.

[0069] In a possible embodiment, performing signal aggregation on multiple working signals to generate a pulse signal includes:

[0070] The turn signal diagnostic signal is used as the first pulse signal; the position light signal and the fog light signal are aggregated to generate the second pulse signal; the reversing light signal and the automatic assisted driving ADAS light signal are aggregated to generate the third pulse signal.

[0071] In this embodiment, the process of signal collection is further described. When the vehicle taillights include clearance lights, turn signals, fog lights, reversing lights and automatic auxiliary driving lights, the working signals of the taillights are respectively collected. Among them, the clearance light signals and fog light signals are collected, the reversing light signals and automatic auxiliary driving ADAS light signals are collected, and the turn signal diagnosis signal is taken as a single signal. This embodiment further proposes a specific process for further collecting the working signals of the taillights, that is, the signals are transmitted through one signal and one transmission path respectively, and subsequent signal diagnosis is performed. The technical solution of this embodiment can effectively perform effective signal integration based on the number of vehicle taillights, and reduce the number of channels occupied by signal transmission. Furthermore, the signal collection targeted by the technical solution of this embodiment is a signal collection based on the voltage working signal. At the same time, on the basis of the two-by-two collection of the working signals, the allocation of the two-by-two collections can be further adjusted according to the signal collection method proposed in this embodiment. For example, the turn signal and the fog light are further collected. Other distribution and collection methods of the working signals of the vehicle taillights are also within the protection scope of the technical solution of this embodiment.

[0072] In a possible embodiment, the first output channel includes a first feedback channel, a second feedback channel, and a third feedback channel;

[0073] Before the control diagnosis circuit identifies the pulse signal working signal and outputs the diagnosis result signal, the method further includes:

[0074] The first pulse signal is transmitted in the first feedback channel; the second pulse signal is transmitted in the second feedback channel; and the third pulse signal is transmitted in the third feedback channel;

[0075] Controlling the diagnosis circuit to identify the pulse signal and output the detection result signal includes: controlling the diagnosis circuit to identify multiple pulse signals and output the detection result signal.

[0076] In the technical solution of this embodiment, for the output channel, the design is further divided into a corresponding number of feedback channels according to the division of the pulse signal, and the pulse signal and the feedback channel are correspondingly allocated, so that the preset pulse signal can be transmitted in the preset feedback channel, and in the subsequent process of identifying the pulse signal, the multiple pulse signals are identified separately, so as to accurately realize the identification and correspondence of multiple taillight signals.

[0077] In a possible embodiment, controlling the diagnosis circuit to identify the multiple pulse signals and outputting a detection result signal includes:

[0078] Confirm the feedback path corresponding to the pulse signal, the feedback path is at least one of the first feedback channel, the second feedback channel and the third feedback channel; control the diagnostic circuit to identify the working pulse of the pulse signal in the feedback path; if the voltage value of the working pulse does not exceed the preset voltage value, output the detection result as a normal detection result signal.

[0079] In the present embodiment, the detection process of the pulse signal is further described, that is, the voltage value of the pulse signal is judged to confirm whether the taillight corresponding to the pulse signal is abnormal. For example, the taillights corresponding to the current pulse signal are the outline lights and fog lights. When the two are working normally, the output voltage value is 0-1.5, so the preset voltage value is set to 1.5V, and when it is judged that the voltage value of the working pulse is 1.2V, it does not exceed the preset voltage value, and it can be confirmed that the outline lights and fog lights are in normal working state. Therefore, the detection results for the two are normal.

[0080] The technical solution of this embodiment is established to achieve rapid judgment of the pulse signal. The pulse signal contains working signals corresponding to at least two types of taillights. Therefore, the technical solution of this embodiment can achieve rapid judgment based on the working characteristics of the two when both are in normal working state, further shorten the diagnosis process and save diagnosis time. Compared with the design scheme in which each taillight corresponds to a detection feedback line, the solution of this embodiment can eliminate the need to detect each taillight separately when the taillight is in normal working state, reduce the detection process and save detection resources.

[0081] In a possible embodiment, after the control diagnosis circuit identifies the working pulse of the pulse signal, the method further includes:

[0082] If the voltage value of the working pulse exceeds the preset voltage value, it is confirmed that the taillight corresponding to the feedback path is working abnormally; the control diagnosis circuit identifies the duty cycle and voltage period of the working pulse in the feedback path as the voltage identification result; and the type of taillight that is working abnormally is confirmed based on the voltage identification result.

[0083] In the content of this embodiment, when the voltage value of the working pulse exceeds the preset voltage value, it can be confirmed that at least one taillight corresponding to the working pulse has an abnormal operation. For example, when the voltage value of the first pulse signal corresponding to the turn signal is greater than the preset voltage value of 1.5V, it can be confirmed that the turn signal fails. At this time, the working pulse is further identified to confirm the type of taillight with abnormal operation. In the technical solution of this embodiment, the process of further identifying the working pulse is to identify the duty cycle and voltage cycle of the working pulse. The abnormal duty cycle and voltage cycle reflected by the abnormal working pulse can correspond to the corresponding type of abnormal taillight. In other words, the type of taillight with abnormal operation can be confirmed based on the duty cycle and voltage cycle of the working pulse, and abnormal feedback of the taillight can be performed. Exemplarily, when it is confirmed that the voltage value of the second pulse signal transmitted in the second feedback channel exceeds the preset voltage value, the duty cycle of the second pulse signal is 50%, the period is 100ms-500ms, the fog lamp is disabled, and the outline lamp is normal; the duty cycle is 100%, the period is 100ms-500ms, the fog lamp is normal, and the outline lamp is disabled. When it is confirmed that the voltage value of the third pulse signal transmitted in the third feedback channel exceeds the preset voltage value, the duty cycle of the third pulse signal is 50%, the period is 100ms-500ms, the ADAS lamp is disabled, and the reversing lamp is normal; the duty cycle is 100%, the period is 100ms-500ms, the ADAS lamp is normal, and the reversing lamp is disabled.

[0084] At the same time, in a further embodiment, for confirmation and feedback of abnormal taillights, when both lights represented by the same pulse signal fail, the diagnosis result signal is confirmed and output in a preset order. For example, when both fog lights and outline lights fail, confirmation and output of outline light abnormality is prioritized; when both ADAS lights and reverse lights fail, confirmation and output of reverse light abnormality is prioritized. The technical solution of this embodiment can generate and feedback the diagnosis results quickly and orderly when abnormalities occur simultaneously, ensuring the effectiveness of abnormal judgment of taillights.

[0085] The method of the embodiment of the present application further implements the diagnosis of the brake light. The working status of the brake light is confirmed by identifying the working current of the brake light. At the same time, the brake light satisfies N-1=0, that is, if any LED light of the brake light is abnormal, the entire brake light will be extinguished. Therefore, the failure of the brake light can be judged based on the working current range of the brake light.

[0086] This embodiment provides a structural diagram of a vehicle taillight detection device, such as Figure 4 As shown, including:

[0087] An acquisition module 401 is used to respond to a vehicle light control instruction, control the on / off state of the multiple tail lights according to the vehicle light control instruction, and acquire working signals of the multiple tail lights in the on / off state;

[0088] A generating module 402, configured to perform signal aggregation on the multiple working signals to generate a pulse signal;

[0089] The output module 403 is used to control the diagnostic circuit to identify the pulse signal and output a detection result signal. The number of first output channels occupied by the pulse signal is less than the number of second output channels occupied by the multiple taillights.

[0090] In a possible embodiment, the generating module 402 is specifically configured to:

[0091] The turn signal diagnostic signal is used as the first pulse signal;

[0092] Aggregating the clearance lamp signal and the fog lamp signal to generate a second pulse signal;

[0093] The reversing light signal and the automatic assisted driving ADAS light signal are aggregated to generate a third pulse signal.

[0094] In a possible embodiment, the first output channel includes a first feedback channel, a second feedback channel, and a third feedback channel; the output module 403 is specifically configured to:

[0095] Transmitting a first pulse signal in the first feedback channel;

[0096] transmitting a second pulse signal in the second feedback channel;

[0097] Transmitting a third pulse signal in the third feedback channel;

[0098] Identify the multiple pulse signals and output the detection result signals.

[0099] In a possible embodiment, the output module 403 is specifically configured to:

[0100] confirming a feedback path corresponding to the pulse signal, wherein the feedback path is at least one of the first feedback channel, the second feedback channel, and the third feedback channel;

[0101] Controlling the diagnostic circuit to identify the working pulse of the pulse signal in the feedback path;

[0102] If the voltage value of the working pulse does not exceed the preset voltage value, the output detection result is a normal detection result signal.

[0103] In a possible embodiment, the output module 403 is specifically configured to:

[0104] If the voltage value of the working pulse exceeds the preset voltage value, it is confirmed that the taillight corresponding to the feedback path is working abnormally;

[0105] The control diagnosis circuit identifies the duty cycle and voltage period of the working pulse in the feedback path as a voltage identification result;

[0106] The type of the tail lamp that is working abnormally is determined according to the voltage identification result.

[0107] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, USB flash drive, mobile hard disk, etc.), including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods of various implementation scenarios of the present application.

[0108] Based on the above Figure 1 The circuit shown, Figure 3 The method shown, and Figure 4 In order to achieve the above-mentioned purpose, the embodiment of the present application further provides an electronic device that can be configured on the vehicle (such as a new energy vehicle) side, and the device includes at least one processor and a memory that is communicatively connected to the at least one processor; the memory is used to store instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor, and the processor is used to execute a computer program to implement the above-mentioned Figure 3 The method shown.

[0109] Optionally, the above-mentioned physical device may also include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), etc.

[0110] Those skilled in the art will appreciate that the above-mentioned physical device structure provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or a combination of certain components, or different arrangements of components.

[0111] Based on the above Figure 3The method shown, the embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method corresponding to any embodiment is implemented. The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the above-mentioned entity device, and supports the operation of information processing programs and other software and / or programs. The network communication module is used to realize communication between the components inside the storage medium, and communication with other hardware and software in the information processing entity device.

[0112] Based on the above electronic device, the embodiment of the present application further provides a vehicle, which may specifically include: Figure 1 The circuit shown or the electronic device as described above. The vehicle can be a new energy vehicle or a traditional vehicle.

[0113] Through the description of the above implementation methods, the technicians in this field can clearly understand that the present application can be implemented by means of software plus the necessary general hardware platform, or by hardware. By applying the scheme of this embodiment, compared with the current existing technology, this embodiment controls the on and off state of multiple taillights according to the headlight control instruction in response to the headlight control instruction, and obtains the working signals of the multiple taillights when they are on and off; performs signal aggregation on the multiple working signals to generate a pulse signal; controls the diagnostic circuit to identify the pulse signal, and outputs the detection result signal, and the number of the first output channels occupied by the pulse signal is less than the number of the second output channels occupied by the multiple taillights. Through the method proposed in this application, it is possible to use the signal aggregation of the signals of the multiple taillights to generate a pulse signal, so that the working signals of the multiple taillight signals can occupy less feedback paths and corresponding detection feedback lines, and by identifying the pulse signals in the corresponding feedback paths, the working conditions of the headlights can be quickly confirmed, which reduces the resource occupation and reduces the design cost of the lamps.

[0114] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0115] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features applied for herein.

Claims

1. A vehicle taillight detection circuit, characterized in that: include: Car light controller, diagnostic circuit, multiple tail lights and multiple constant current chips; The multiple constant current chips are connected to the multiple taillights one by one, respectively, for receiving a light control instruction, controlling the on / off state of the multiple taillights according to the light control instruction, and obtaining a working signal of the multiple taillights in the on / off state; The vehicle light controller is connected to the multiple constant current chips, and is used to obtain multiple working signals, and aggregate the multiple working signals to generate a pulse signal; The diagnostic circuit is connected to the vehicle light controller and is used to identify the pulse signal and output a detection result signal. The number of first output channels occupied by the pulse signal is less than the number of second output channels occupied by the multiple tail lights.

2. The circuit according to claim 1, characterized in that The diagnostic circuit comprises: a first NMOS tube, a first capacitor, a first resistor, a second resistor and a third resistor; The input end of the diagnostic circuit is used to obtain the working signal from the vehicle light controller, the first end of the first resistor serves as the input end of the diagnostic circuit, the second end of the first resistor is connected to the first end of the first capacitor, the second end of the first capacitor is connected to the first end of the second resistor, the second end of the first capacitor is grounded, the second end of the second resistor is connected to the source of the first NMOS tube, the second end of the first resistor is connected to the gate of the first NMOS tube, the drain of the first NMOS tube passes through the third resistor as the output end of the diagnostic circuit, and outputs the diagnostic signal.

3. The method according to claim 1, characterized in that The multi-way taillights include at least one of: a clearance light, a turn signal light, a fog light, a reversing light and an automatic auxiliary driving light.

4. The circuit according to claim 3, characterized in that The first output channel includes: a first feedback channel, a second feedback channel and a third feedback channel; The first feedback channel is used to output a first pulse signal representing a turn signal; The second feedback channel is used to output a second pulse signal of a combination of a clearance light signal and a fog light signal; The third feedback channel is used to output a third pulse signal of the reversing light signal and the automatic auxiliary driving light signal set.

5. A vehicle taillight detection method, characterized in that: include: In response to a vehicle light control instruction, controlling the on / off state of the multiple tail lights according to the vehicle light control instruction, and obtaining working signals of the multiple tail lights in the on / off state; Performing signal aggregation on the multiple working signals to generate a pulse signal; The control diagnosis circuit identifies the pulse signal and outputs a detection result signal, and the number of first output channels occupied by the pulse signal is less than the number of second output channels occupied by the multi-channel taillights.

6. The method according to claim 5, characterized in that The step of performing signal aggregation on the multiple working signals to generate a pulse signal includes: The turn signal diagnostic signal is used as the first pulse signal; Aggregating the clearance lamp signal and the fog lamp signal to generate a second pulse signal; The reversing light signal and the automatic assisted driving ADAS light signal are aggregated to generate a third pulse signal.

7. The method according to claim 6, characterized in that The first output channel includes a first feedback channel, a second feedback channel and a third feedback channel; Before the control diagnosis circuit identifies the pulse signal working signal and outputs the diagnosis result signal, the method further includes: Transmitting a first pulse signal in the first feedback channel; transmitting a second pulse signal in the second feedback channel; Transmitting a third pulse signal in the third feedback channel; The control diagnosis circuit identifies the pulse signal and outputs a detection result signal, including: The control diagnosis circuit identifies the multi-channel pulse signals and outputs the detection result signals.

8. The method according to claim 7, characterized in that The control diagnosis circuit identifies multiple pulse signals and outputs a detection result signal, including: confirming a feedback path corresponding to the pulse signal, wherein the feedback path is at least one of the first feedback channel, the second feedback channel, and the third feedback channel; Controlling the diagnostic circuit to identify the working pulse of the pulse signal in the feedback path; If the voltage value of the working pulse does not exceed the preset voltage value, the output detection result is a normal detection result signal.

9. The method according to claim 8, characterized in that After the control diagnosis circuit identifies the working pulse of the pulse signal, the method further includes: If the voltage value of the working pulse exceeds the preset voltage value, it is confirmed that the taillight corresponding to the feedback path is working abnormally; The control diagnosis circuit identifies the duty cycle and voltage period of the working pulse in the feedback path as a voltage identification result; The type of the tail lamp that is working abnormally is determined according to the voltage identification result.

10. An electronic device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 5 to 9.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 5 to 9 is implemented.

12. A vehicle, characterized in that: The vehicle is equipped with the circuit according to any one of claims 1 to 4, or the electronic device according to claim 10.

Images