Vehicle safety early warning method and device, storage medium and program product

Abstract

The invention provides a vehicle safety early warning method and device, a storage medium and a program product. The method comprises the following steps: determining whether a DC-DC converter of the vehicle is in power supply abnormity or not; under the condition that the DC-DC converter is in the abnormal power supply state, the power supply voltage of a storage battery of the vehicle is obtained; if the power supply voltage is smaller than a preset voltage, reporting a first fault state to a cloud server; the first fault state is used for indicating that the DC-DC converter is in a fault state; the preset voltage is greater than the minimum working voltage of a vehicle control unit of the vehicle. According to the scheme, the fault state of the DC-DC converter is actively reported, vehicle safety early warning is achieved, and the safety of the vehicle in the driving process is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle safety warning technology, and in particular to a vehicle safety warning method, device, storage medium and program product. Background Art

[0002] The DC-DC converter (DC-DC converter) of pure electric vehicles converts the high voltage of the power battery into the low voltage 12V power supply required by each controller (ECU: Electric control unit) of the vehicle. The DC-DC converter is a very critical link in the practical application of pure electric vehicles. If the DC-DC converter fails, the low voltage power supply of the numerous ECUs in the vehicle can only be obtained from the low voltage battery, but the battery voltage capacity of the vehicle is limited and cannot provide low voltage power to the ECU on the vehicle for a long time. This leads to the situation that if the DC-DC converter fails, the battery voltage may be lower than the minimum operating voltage of the ECU, for example: 10.5V, after half an hour to one and a half hours, and the low voltage power required for the ECU to work cannot be provided. The ECU stops working, and the vehicle cannot be driven or the screen is black. In extreme cases, if the DC-DC converter fails and the battery voltage is lower than the minimum operating voltage of the ECU while the user is driving, the vehicle will be at risk of losing power. For users, this situation is unacceptable and poses a safety risk.

[0003] At present, when a DC-DC converter fails to work, the OEM adopts a passive way to learn about the fault. That is, when the DC-DC converter of the user's vehicle fails to work, the fault is manifested in the instrument panel reporting a fault, the vehicle cannot be ready, the vehicle power is interrupted, the vehicle instrument panel is black, and other fault phenomena that the user can clearly perceive. The user then contacts the offline car shop to inform the fault information. Only after the offline car shop locates the problem can it be confirmed that it is a DC-DC converter fault. This method of passively learning about the DC-DC converter failure is inefficient and the accuracy cannot be guaranteed. Summary of the invention

[0004] The purpose of the present application is to provide a vehicle safety warning method, device, storage medium and program product to solve the problem of low efficiency and low accuracy in passively determining fault conditions of DC-DC converters in the prior art.

[0005] To achieve the above objectives, an embodiment of the present application provides a vehicle safety warning method, comprising:

[0006] Determine whether the DC-DC converter of the vehicle is in abnormal power supply;

[0007] When the DC-DC converter is in the power supply abnormality, obtaining the power supply voltage of the battery of the vehicle;

[0008] If the supply voltage is less than a preset voltage, a first fault state is reported to the cloud server; the first fault state is used to indicate that the DC-DC converter is faulty; the preset voltage is greater than the minimum operating voltage of the vehicle controller of the vehicle.

[0009] Optionally, after reporting the first fault status to the cloud server, the method further includes:

[0010] Obtaining a voltage value of a power battery of the vehicle;

[0011] If the voltage value is less than the first preset value and the supply voltage is less than the preset voltage, a second fault state is reported to the cloud server; the second fault state is used to indicate that the power battery is faulty and the DC-DC converter is not faulty.

[0012] Optionally, after obtaining the voltage value of the power battery of the vehicle, the method further includes:

[0013] If the voltage value is greater than or equal to the first preset value, obtaining the driving speed of the vehicle;

[0014] Receive a first prompt message sent by the cloud server when the driving speed is greater than a second preset value; the first prompt message is a message for prompting the vehicle to stop at a target area.

[0015] Optionally, after obtaining the driving speed of the vehicle, the method further includes:

[0016] When the driving speed is less than a second preset value, obtaining a front bonnet state of the vehicle;

[0017] Receive the first prompt message sent by the cloud server when the front hood is in a closed state.

[0018] Optionally, after receiving the first prompt message, the method further includes:

[0019] Acquiring the driving positioning information of the vehicle in real time;

[0020] According to the driving positioning information, determining whether the vehicle is within the effective range of the target area; wherein the target area includes a safe lane, a target parking space, and a temporary parking area;

[0021] When the vehicle positioning information meets the effective range of the target area, determining a corresponding warning strategy according to the type of the target area;

[0022] According to the early warning strategy, corresponding early warning processing is performed on the vehicle.

[0023] Optionally, after obtaining the state of the front hood of the vehicle, the method further includes:

[0024] receiving a second prompt message sent by the cloud server when the front hood is in an open state;

[0025] After receiving the second prompt message, the vehicle is controlled to maintain a current state and a fault alarm is shielded.

[0026] Optionally, determining whether a DC-DC converter of the vehicle is in a power supply abnormality includes:

[0027] determining an output voltage of the DC-DC converter;

[0028] When the output voltage meets the fault condition of the DC-DC converter, it is determined that the DC-DC converter is in a power supply abnormality; wherein the fault condition is: the output voltage is less than a lower limit value of a preset interval of the output voltage, or the output voltage is greater than an upper limit value of a preset interval of the output voltage.

[0029] To achieve the above objectives, an embodiment of the present application provides a vehicle safety warning device, comprising:

[0030] A first processing module, used to determine whether a DC-DC converter of the vehicle is in a power supply abnormality;

[0031] A first acquisition module, configured to acquire a power supply voltage of a battery of the vehicle when the DC-DC converter is in the power supply abnormality;

[0032] The second processing module is used to report a first fault state to the cloud server if the power supply voltage is less than a preset voltage; the first fault state is used to indicate that the DC-DC converter is faulty; the preset voltage is greater than the minimum operating voltage of the vehicle controller of the vehicle.

[0033] To achieve the above objectives, an embodiment of the present application provides a readable storage medium on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps in the method described above are implemented.

[0034] To achieve the above objective, an embodiment of the present application provides a computer program product, including computer instructions, which implement the steps of the above method when executed by a processor.

[0035] The beneficial effects of the above technical solution of the present application are as follows:

[0036] In the embodiment of the present application, when determining whether the DC-DC converter is in a power supply abnormality, the power supply voltage of the vehicle's battery is obtained; when it is determined that the power supply voltage is less than a preset voltage, a first fault state is reported to the cloud server; the first fault state is used to indicate that the DC-DC converter is in a fault; the preset voltage is greater than the minimum operating voltage of the vehicle controller of the vehicle. The present application realizes vehicle safety warning by actively reporting the fault state, thereby improving the safety of the vehicle during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A flow chart of a vehicle safety warning method provided in an embodiment of the present application;

[0038] Figure 2 This is a structural diagram of a vehicle safety warning device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and advantages to be solved by the present application clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0040] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present application. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0041] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0043] 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 ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] The embodiments of the present application provide a vehicle safety warning method, device, storage medium and program product. The method and device are based on the same application concept. Since the method and device solve the problem in a similar principle, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0045] Reference Figure 1 As shown, the embodiment of the present application provides a vehicle safety warning method, including:

[0046] Step 11, determining whether the DC-DC converter of the vehicle is in a power supply abnormality;

[0047] Step 12, when the DC-DC converter is in the power supply abnormality, obtaining the power supply voltage of the battery of the vehicle;

[0048] Step 13, if the power supply voltage is less than the preset voltage, report a first fault state to the cloud server; the first fault state is used to indicate that the DC-DC converter is faulty; the preset voltage is greater than the minimum operating voltage of the vehicle controller of the vehicle.

[0049] In the embodiment of the present application, it is determined whether the DC-DC converter of the vehicle (optionally an electric vehicle) is in a power supply abnormality, and the power supply abnormality is used to indicate that the DC-DC converter cannot normally provide normal power to other controllers of the vehicle, that is, the DC-DC converter cannot work. It is determined that the DC-DC converter is in the power supply abnormality, and the power supply voltage of the battery of the vehicle is obtained. The power supply voltage is the voltage and power provided to the vehicle controller ECU. The power supply voltage is compared with the preset voltage. The preset voltage is greater than the minimum operating voltage of the vehicle controller of the vehicle. For example, the minimum operating voltage of the vehicle controller can be selected as 10.5V, and the preset voltage can be selected as 11V. If the power supply voltage is less than the preset voltage, the first fault state is reported to the cloud server; the first fault state is used to indicate that the DC-DC converter is in a fault.

[0050] It should be noted that after the first fault state is reported, the DC-DC converter is not always considered to be faulty. If the fault state is subsequently monitored to change, the cloud server may consider the first fault state to be a false alarm.

[0051] In order to solve the problem that the DC-DC converter fails to work during the actual use of the vehicle by the user, and the OEM can only passively learn of the failure, causing potential vehicle use risks, this application proposes an active warning solution, which aims to solve the problem of the DC-DC converter failing and avoid the vehicle suddenly stopping on the road while the user is driving, thereby improving the safety of the user's vehicle use.

[0052] Optionally, step 11 in the embodiment of the present application includes:

[0053] determining an output voltage of the DC-DC converter;

[0054] When the output voltage meets the fault condition of the DC-DC converter, it is determined that the DC-DC converter is in a power supply abnormality; wherein the fault condition is: the output voltage is less than a lower limit value of a preset interval of the output voltage, or the output voltage is greater than an upper limit value of a preset interval of the output voltage.

[0055] Optionally, the lower limit value of the preset output voltage interval is 27.0 Vdc; the upper limit value of the preset output voltage interval is 28.0 Vdc; dc represents direct current; and V represents volt.

[0056] This application determines whether there is any abnormality in the power supply of the high-voltage circuit by detecting the high-voltage power supply voltage of each component of the vehicle in real time during the discharge process of the vehicle. If the power supply voltage of the components of the relevant nodes is found to be abnormally fluctuating or abnormally reduced, it is determined that the connector is loose or in poor contact, and the power supply can be cut off or the high voltage of the vehicle can be cut off to reduce the safety risk of the vehicle, and a fault warning is issued at the same time to prompt the driver to check.

[0057] After the vehicle is connected to high voltage, each node (fuel cell system, power battery thermal management system, air conditioning compressor, electric heating heater) can upload the high voltage supply voltage of each component to the controller area network bus (CAN) in real time. After the bus (CAN) connects to the battery management system node and receives the voltage of the above nodes respectively, it judges whether the power supply status is normal in combination with the working status of the above nodes. If the power supply status is abnormal, different operations are taken according to the different status of each node, and the error status is reported to the vehicle controller at the same time. The vehicle controller performs different fault processing according to the corresponding level. Specifically, if it is determined that the DC-DC converter is connected to the CAN, and power is not supplied to each node, if the output voltage of the DC-DC converter is less than the lower limit of the preset output voltage interval, or greater than the upper limit of the preset output voltage interval, it is preliminarily judged that the DC-DC converter is in power supply abnormality, and it is considered that the DC-DC converter cannot work.

[0058] Optionally, after reporting the first fault status to the cloud server, the method further includes:

[0059] Obtaining a voltage value of a power battery of the vehicle;

[0060] If the voltage value is less than the first preset value and the supply voltage is less than the preset voltage, a second fault state is reported to the cloud server; the second fault state is used to indicate that the power battery is faulty and the DC-DC converter is not faulty.

[0061] After reporting the first fault state to the cloud server, the present application obtains the voltage value of the vehicle's power battery; the present application configures or preconfigures a first preset value, which may be 200V, and compares the voltage value of the power battery with the first preset value. If the voltage value of the power battery is less than the first preset value, the second fault state is reported to the cloud server, that is, when the voltage value is less than the first preset value and the supply voltage is less than the preset voltage, the second fault state is reported to the cloud server. After receiving the second fault state, the cloud server considers that the power battery is faulty and the DC-DC converter is not faulty, and the received first fault state can be ignored, that is, the DC-DC converter fault indicated by the first fault state is a false alarm, and the vehicle is considered to be in a state where the power battery is faulty and the DC-DC converter is not faulty.

[0062] Optionally, after obtaining the voltage value of the power battery of the vehicle, the method further includes:

[0063] If the voltage value is greater than or equal to the first preset value, obtaining the driving speed of the vehicle;

[0064] Receive a first prompt message sent by the cloud server when the driving speed is greater than a second preset value; the first prompt message is a message for prompting the vehicle to stop at a target area.

[0065] In this application, if the voltage value of the power battery is greater than or equal to the first preset value, that is, the voltage value of the power battery is greater than 11V, the driving speed of the vehicle is obtained. In this application, a second preset value is set, which can be 1km / h. When the cloud server determines that the driving speed is greater than or equal to 1km / h, a first prompt message is sent, and the vehicle stops at the target area after receiving the first prompt message.

[0066] Optionally, after obtaining the driving speed of the vehicle, the method further includes:

[0067] When the driving speed is less than a second preset value, obtaining a front bonnet state of the vehicle;

[0068] Receive the first prompt message sent by the cloud server when the front hood is in a closed state.

[0069] In this application, if the voltage value of the power battery is greater than or equal to the first preset value and the vehicle's driving speed is less than 1 km / h, the front hood status of the vehicle is obtained. When the cloud server determines that the front hood status is closed, a first prompt message is sent, and the vehicle also parks at the target area after receiving the first prompt message.

[0070] Further, after receiving the first prompt message, the method further includes:

[0071] Acquiring the driving positioning information of the vehicle in real time;

[0072] According to the driving positioning information, determining whether the vehicle is within the effective range of the target area; wherein the target area includes a safe lane, a target parking space, and a temporary parking area;

[0073] When the vehicle positioning information meets the effective range of the target area, determining a corresponding warning strategy according to the type of the target area;

[0074] According to the early warning strategy, corresponding early warning processing is performed on the vehicle.

[0075] In the embodiment of the present application, the driving positioning information refers to the vehicle position of the vehicle during driving, and the vehicle position is understood by acquiring the driving positioning information. When the driving positioning information of the vehicle is acquired, it can be determined whether it is within the effective range of the target area according to the driving positioning information.

[0076] The present application sets different target areas, and different warning parking strategies correspond to different types of target areas. After determining the target area that matches the currently traveling vehicle, it is also possible to understand whether there is a satisfying target area nearby. For example, if the vehicle is traveling at high speed, it is determined that after the vehicle receives the first prompt message, it is necessary to stop the vehicle in the target area within a preset time, otherwise it is easy to be dangerous. Here, the target area is determined to be a safe lane, and the cloud server quickly gives the nearest target area nearby based on the vehicle's positioning information. After the vehicle travels to the effective range of the target area, the vehicle is warned according to the corresponding warning strategy.

[0077] If the vehicle has not been charged for a long time and runs out of power while driving, after receiving the first prompt message, the cloud server determines that the target area is the target parking space or temporary parking area based on the driving positioning information, and gives the vehicle's shortest driving route to enable the current vehicle to perform corresponding early warning processing.

[0078] In a specific implementation, after the vehicle rushes into the escape lane, the operating parameters of the vehicle in the escape lane are collected in real time, and within the first preset time after the vehicle rushes into the escape lane, it is detected whether the vehicle handbrake is in the activated state according to the braking signal of the vehicle handbrake, and whether the opening and closing degree of the handbrake is greater than or equal to the first preset ratio. If so, it is determined that the vehicle has pulled the handbrake, and then it is detected whether the vehicle is currently in the off state. According to the operating parameters collected in real time, it is detected whether the interval between the time when the vehicle switches to the off state and the time when the vehicle handbrake is pulled does not exceed the second preset time. If so, it is determined that the vehicle is currently in the off state, and then it is detected whether the seat belt of the main driver of the vehicle has been unfastened, and whether the main driver's door of the vehicle is opened first and then closed, so as to determine whether the driver is in a normal state after the vehicle rushes into the escape lane and has left the vehicle.

[0079] If the driver is in a normal state after the vehicle rushes into the escape lane, the handbrake of the vehicle will be pulled by the driver to ensure that the vehicle stops completely. In a specific example, after the vehicle rushes into the escape lane, if within 30 seconds, the brake signal of the handbrake is in the activated state and the opening and closing degree of the handbrake is not less than 70%, it can be determined that the driver has pulled the handbrake.

[0080] If the driver is in a normal state after the vehicle rushes into the safe lane, the vehicle will be turned off by the driver to ensure that the vehicle will not encounter other dangers. In a specific example, when the interval between the time when the vehicle state is switched to the off state and the time when the driver pulls the handbrake is less than 10 seconds, it is determined that the vehicle is currently in the off state.

[0081] If the driver is in a normal state after the vehicle rushes into the escape lane, the driver will leave the vehicle and wait for rescue after stopping the vehicle and turning off the engine, and the driver's seat belt must be unfastened. In a specific example, if the interval between the time when the driver's seat belt is unfastened and the time when the vehicle is turned off is no more than 30 seconds, it is determined that the driver's seat belt of the vehicle has been unfastened.

[0082] In a specific example, when the main driver's door switch is in the open state, and the interval between the door opening time and the time when the main driver's seat belt of the vehicle is unfastened is no more than 30 seconds, and within 10 seconds after the main driver's door is opened, the main driver's door switch is in the closed state, then it is determined that the driver is in a normal state and has left the vehicle after the vehicle rushes into the escape lane.

[0083] Of course, during the driving process of the vehicle, after receiving the first prompt message sent by the cloud server, it is determined whether the power accuracy deviation value of the battery read in real time is also less than the preset accuracy deviation value. If the power supply voltage of the battery is less than the first preset value (optionally 11V), but the power accuracy deviation value is greater than the preset accuracy deviation value, it means that a large error may occur at present. Among them, the power accuracy deviation value can be directly obtained from the battery status information. The power accuracy deviation value refers to the measurement deviation value of the battery, and the power accuracy deviation value reflects the deviation size of the power measurement of the power. A large power accuracy deviation value indicates a large error in the remaining power value.

[0084] For example, if the power supply voltage is 10.8V and the power accuracy deviation value is 20%, the true value of the power supply voltage may be between 8.64V and 12.96V. At this time, it is necessary to further obtain the value of the power supply voltage to prevent false alarms. That is, after receiving the first prompt message sent by the cloud server, it is determined that the power accuracy deviation value of the battery read in real time is also less than the preset accuracy deviation value, so that the authenticity of the power supply voltage can be guaranteed. The preset accuracy deviation value of this application can be selected as 2%.

[0085] Optionally, after obtaining the state of the front hood of the vehicle, the method further includes:

[0086] receiving a second prompt message sent by the cloud server when the front hood is in an open state;

[0087] After receiving the second prompt message, the vehicle is controlled to maintain a current state and a fault alarm is shielded.

[0088] In this application, if the voltage value of the power battery is greater than or equal to the first preset value (optionally 200V) and the vehicle's driving speed is less than the second preset value (optionally 1km / h), the front hood status of the vehicle is obtained. When the cloud server determines that the front hood status is open, a second prompt message is sent. After receiving the second prompt message, the vehicle maintains the vehicle status unchanged, assuming that the current vehicle may be under maintenance, so the vehicle is controlled to maintain the current status and the fault alarm is shielded.

[0089] In a specific embodiment, when it is determined that the DC-DC converter is abnormally powered and cannot work, the power supply voltage of the low-voltage battery to the ECU of the whole vehicle is obtained. If it is determined that the power supply voltage is less than a preset voltage (such as the preset voltage is 11V, which is greater than the minimum operating voltage of the ECU), the first fault state is first reported to the cloud server; the first fault state temporarily determines that the DC-DC is faulty, and uses the cloud server to monitor whether the power battery of the vehicle is greater than a first preset value (the first preset value is, for example, 200V). If the voltage value of the power battery is less than 200V, the second fault state is reported to the cloud server; the second fault state is used to indicate that the power battery is faulty and the DC-DC converter is not faulty.

[0090] If the voltage of the power battery is greater than or equal to 200V and the vehicle's speed is obtained, the cloud server determines that the speed is greater than or equal to the second preset value (the second preset value can be 1km / h), and then sends a first prompt message to the vehicle, which is a message for prompting the vehicle to stop at the target area. The driver can also be informed by the staff to park the vehicle at the target area and wait for rescue, and the local service provider will provide roadside assistance, and then the vehicle will be shipped to the maintenance site for further investigation and determination of the fault.

[0091] If the voltage value of the power battery is greater than or equal to 200V, and the cloud server determines that the driving speed is less than a second preset value (the second preset value can be optionally 1km / h), it further obtains whether the front hood of the vehicle is in an open state. When the cloud server determines that the front hood is in an open state, it receives a second prompt message sent by the cloud server; after receiving the second prompt message, the vehicle is controlled to maintain the current state and the fault alarm is shielded, that is, the cloud server believes that the current vehicle may be under maintenance, so the vehicle is controlled to maintain the current state and the fault alarm is shielded, that is, the vehicle is not processed for the time being, and the cloud server continues to monitor the vehicle's speed, front hood, power battery and other states.

[0092] If the voltage of the power battery is greater than or equal to 200V, and the cloud server determines that the driving speed is less than a second preset value (the second preset value can be optionally 1km / h), it is further determined that the front hood of the vehicle is closed, and the vehicle receives the first prompt message sent by the cloud server to reduce the speed and stop at the target area to wait for rescue.

[0093] This application takes into account that in actual applications, users have many car usage scenarios. When the platform (cloud server) issues a fault warning, it may be a condition of repairing the car, or the user may not be driving. The degree of urgency is different. It is necessary to distinguish the key conditions and invest resources in the matters that need to be solved. Therefore, when the cloud server is monitoring, the detection information is screened, classified according to the degree of urgency of the fault, and specific plans are formulated according to the degree of urgency. When the cloud server performs DC-DC status monitoring, it is necessary to combine the vehicle speed signal, battery voltage, power battery voltage, DC-DC working status, front hood signal and other fault information to make multi-dimensional judgments, and formulate different response strategies according to different working conditions.

[0094] To summarize, the present application accurately locates the DC-DC converter failure problem by determining the DC-DC converter failure in a multi-dimensional manner, and provides a safety warning strategy. After a DC-DC converter failure occurs, it combines multiple after-sales links according to the urgency of different situations to ensure the user's safe travel and improve safety during driving.

[0095] Reference Figure 2 As shown, the embodiment of the present application provides a vehicle safety warning device, including:

[0096] The first processing module 21 is used to determine whether the DC-DC converter of the vehicle is in a power supply abnormality;

[0097] A first acquisition module 22, configured to acquire a power supply voltage of a battery of the vehicle when the DC-DC converter is in the power supply abnormality;

[0098] The second processing module 23 is used to report a first fault state to the cloud server if the power supply voltage is less than a preset voltage; the first fault state is used to indicate that the DC-DC converter is faulty; the preset voltage is greater than the minimum operating voltage of the vehicle controller of the vehicle.

[0099] In the embodiment of the present application, the above-mentioned vehicle safety warning device further includes:

[0100] A second acquisition module, used to acquire a voltage value of a power battery of the vehicle;

[0101] The third processing module is used to report a second fault state to the cloud server if the voltage value is less than the first preset value and the supply voltage is less than the preset voltage; the second fault state is used to indicate that the power battery is faulty and the DC-DC converter is not faulty.

[0102] In the embodiment of the present application, the above-mentioned vehicle safety warning device further includes:

[0103] a third acquisition module, configured to acquire the driving speed of the vehicle if the voltage value is greater than or equal to the first preset value;

[0104] The first receiving module is used to receive a first prompt message sent by the cloud server when the driving speed is greater than a second preset value; the first prompt message is a message for prompting the vehicle to stop at a target area.

[0105] In the embodiment of the present application, the above-mentioned vehicle safety warning device further includes:

[0106] A fourth acquisition module, configured to acquire a state of a front bonnet of the vehicle when the driving speed is less than a second preset value;

[0107] The second receiving module is used to receive the first prompt message sent by the cloud server when the front engine cover is in a closed state.

[0108] In the embodiment of the present application, the above-mentioned vehicle safety warning device further includes:

[0109] A fifth acquisition module, used to acquire the driving positioning information of the vehicle in real time;

[0110] A fourth processing module is used to determine whether the vehicle is within the effective range of the target area according to the driving positioning information; wherein the target area includes a safe lane, a target parking space, and a temporary parking area;

[0111] A fifth processing module, configured to determine a corresponding warning strategy according to the type of the target area when the vehicle positioning information meets the effective range of the target area;

[0112] The sixth processing module is used to perform corresponding warning processing on the vehicle according to the warning strategy.

[0113] In the embodiment of the present application, the above-mentioned vehicle safety warning device further includes:

[0114] A third receiving module is used to receive a second prompt message sent by the cloud server when the front engine cover is in the open state;

[0115] The seventh processing module is used to control the vehicle to maintain a current state and shield a fault alarm after receiving the second prompt message.

[0116] Optionally, the first processing module 21 in the present application includes:

[0117] A first determining unit, configured to determine an output voltage of the DC-DC converter;

[0118] The second determination unit is used to determine that the DC-DC converter is in a power supply abnormality when the output voltage meets the fault condition of the DC-DC converter; wherein the fault condition is: the output voltage is less than a lower limit value of a preset interval of the output voltage, or the output voltage is greater than an upper limit value of a preset interval of the output voltage.

[0119] Among them, the implementation embodiments of the above-mentioned vehicle safety warning method are all applicable to the embodiments of the vehicle safety warning device and can achieve the same technical effects.

[0120] A readable storage medium in an embodiment of the present application stores a program or instruction thereon. When the program or instruction is executed by a processor, the steps in the vehicle safety warning method as described above are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0121] The processor is the processor in the vehicle safety warning method described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0122] The present application also provides a computer program product, including computer instructions, which, when executed by a processor, implement the above Figure 1 The various processes of the method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0123] In the embodiment of the present application, module can be implemented with software so that it can be performed by various types of processors. For example, an executable code module of an identification can include one or more physical or logical blocks of computer instructions, for example, it can be constructed as an object, process or function. Nevertheless, the executable code of the identified module does not need to be physically located together, but can include different instructions stored in different locations, and when these instructions are logically combined together, it constitutes a module and realizes the specified purpose of the module.

[0124] In fact, executable code module can be a single instruction or many instructions, and can even be distributed on a plurality of different code segments, distributed among different programs, and distributed across a plurality of memory devices. Similarly, operating data can be identified in the module, and can be implemented and organized in the data structure of any appropriate type according to any appropriate form. The operating data can be collected as a single data set, or can be distributed in different locations (including on different storage devices), and can only be present on a system or network as an electronic signal at least in part.

[0125] When a module can be implemented by software, considering the level of existing hardware technology, a person skilled in the art can build a corresponding hardware circuit to implement the corresponding function of the module that can be implemented by software without considering the cost. The hardware circuit includes a conventional very large scale integration (VLSI) circuit or gate array and existing semiconductors such as logic chips, transistors, or other discrete components. The module can also be implemented by a programmable hardware device, such as a field programmable gate array, a programmable array logic, a programmable logic device, etc.

[0126] The above exemplary embodiments are described with reference to the accompanying drawings, and many different forms and embodiments are feasible without departing from the spirit and teachings of the present application. Therefore, the present application should not be constructed as a limitation of the exemplary embodiments proposed herein. More specifically, these exemplary embodiments are provided so that the present application will be perfect and complete, and the scope of the present application will be conveyed to those who are familiar with the technology. In these figures, the component sizes and relative sizes may be exaggerated for clarity. The terms used here are only based on the purpose of describing specific exemplary embodiments and are not intended to be limiting. As used herein, unless the text clearly indicates otherwise, the singular forms "one", "an" and "the" are intended to include these multiple forms. It will be further understood that the terms "comprising" and / or "including" when used in this specification indicate the presence of the features, integers, steps, operations, components and / or components, but do not exclude the presence or increase of one or more other features, integers, steps, operations, components, components and / or their groups. Unless otherwise indicated, when stated, a range of values ​​includes the upper and lower limits of that range and any subranges therebetween.

[0127] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A vehicle safety early warning method, characterized in that: include: Determine whether the DC-DC converter of the vehicle is in abnormal power supply; When the DC-DC converter is in the power supply abnormality, obtaining the power supply voltage of the battery of the vehicle; If the supply voltage is less than a preset voltage, a first fault state is reported to the cloud server; the first fault state is used to indicate that the DC-DC converter is faulty; the preset voltage is greater than the minimum operating voltage of the vehicle controller of the vehicle.

2. The method according to claim 1, characterized in that After reporting the first fault status to the cloud server, the method further includes: Obtaining a voltage value of a power battery of the vehicle; If the voltage value is less than the first preset value and the supply voltage is less than the preset voltage, a second fault state is reported to the cloud server; the second fault state is used to indicate that the power battery is faulty and the DC-DC converter is not faulty.

3. The method according to claim 2, characterized in that After obtaining the voltage value of the power battery of the vehicle, the method further includes: If the voltage value is greater than or equal to the first preset value, obtaining the driving speed of the vehicle; Receive a first prompt message sent by the cloud server when the driving speed is greater than a second preset value; the first prompt message is a message for prompting the vehicle to stop at a target area.

4. The method according to claim 3, characterized in that After obtaining the driving speed of the vehicle, the method further includes: When the driving speed is less than a second preset value, obtaining a front bonnet state of the vehicle; Receive the first prompt message sent by the cloud server when the front hood is in a closed state.

5. The method according to claim 3 or 4, characterized in that: After receiving the first prompt message, the method further includes: Acquiring the driving positioning information of the vehicle in real time; According to the driving positioning information, determining whether the vehicle is within the effective range of the target area; wherein the target area includes a safe lane, a target parking space, and a temporary parking area; When the vehicle positioning information meets the effective range of the target area, determining a corresponding early warning strategy according to the type of the target area; According to the early warning strategy, corresponding early warning processing is performed on the vehicle.

6. The method according to claim 4, characterized in that After obtaining the state of the front hood of the vehicle, the method further includes: receiving a second prompt message sent by the cloud server when the front hood is in an open state; After receiving the second prompt message, the vehicle is controlled to maintain a current state and a fault alarm is shielded.

7. The method according to claim 1, characterized in that Determine if the vehicle's DC-DC converter is in a power supply abnormality, including: determining an output voltage of the DC-DC converter; When the output voltage meets the fault condition of the DC-DC converter, it is determined that the DC-DC converter is in a power supply abnormality; wherein the fault condition is: the output voltage is less than a lower limit value of a preset interval of the output voltage, or the output voltage is greater than an upper limit value of a preset interval of the output voltage.

8. A vehicle safety warning device, characterized in that: include: A first processing module is used to determine whether a DC-DC converter of the vehicle is in a power supply abnormality; A first acquisition module, configured to acquire a power supply voltage of a battery of the vehicle when the DC-DC converter is in the power supply abnormality; The second processing module is used to report a first fault state to the cloud server if the power supply voltage is less than a preset voltage; the first fault state is used to indicate that the DC-DC converter is faulty; the preset voltage is greater than the minimum operating voltage of the vehicle controller of the vehicle.

9. A readable storage medium having a program or instruction stored thereon, characterized in that: When the program or instruction is executed by a processor, the steps in the method according to any one of claims 1 to 7 are implemented.

10. A computer program product, characterized in that The method comprises computer instructions, which, when executed by a processor, implement the steps of the method according to any one of claims 1 to 7.

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