Vehicle protection system and vehicle

Abstract

The invention discloses a vehicle protection system and a vehicle, and belongs to the technical field of vehicles, and the system comprises a sampling circuit which is connected with an electric appliance of the vehicle in series, is electrically connected with the first input end of a comparison circuit, and is used for outputting the sampling voltage of the sampling circuit to the comparison circuit; the output end of the comparison circuit is electrically connected with the input end of the self-locking circuit, and the comparison circuit is used for outputting a first signal to the self-locking circuit under the condition that the sampling voltage is higher than the reference voltage; the output end of the self-locking circuit is electrically connected with the control end of the switching circuit, the self-locking circuit is used for responding to the first signal and locking the state of outputting a second signal to the control end of the switching circuit, the second signal is used for controlling the switching circuit to be switched off, and the first end of the switching circuit is electrically connected with an electric appliance; the second end of the switching circuit is electrically connected with the power supply of the electric appliance. Therefore, protection measures can be taken in time when the electric appliance of the vehicle is abnormal, and the electric appliance is prevented from being damaged.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and in particular, relates to a vehicle protection system and a vehicle. Background Art

[0002] In order to improve vehicle performance, it is necessary to perform health checks on various components of the vehicle so that protective measures can be taken in a timely manner when abnormalities are found in vehicle components.

[0003] In the era of fuel vehicles, vehicle health checks mainly focus on the mechanical structure of vehicle components, which can be observed with the naked eye or observation instruments.

[0004] However, with the vigorous development of the vehicle field, there are more and more electrical appliances in vehicles. The health status of electrical appliances cannot be directly observed by the naked eye or observation instruments. In addition, it is impossible to perform real-time health detection of electrical appliances by the naked eye or observation instruments. Therefore, it is impossible to take protective measures in time when there are abnormalities in electrical appliances, which can easily cause damage to electrical appliances and affect vehicle performance. Summary of the invention

[0005] The embodiments of the present application provide a vehicle protection system and a vehicle, which can at least solve the problem in the prior art that protection measures cannot be taken in time when abnormalities occur in the electrical appliances of the vehicle, which easily leads to damage to the electrical appliances and affects the performance of the vehicle.

[0006] In a first aspect, an embodiment of the present application provides a vehicle protection system, comprising:

[0007] A sampling circuit, the sampling circuit is connected in series with the electrical appliance of the vehicle, the sampling circuit is electrically connected to the first input terminal of the comparison circuit, and is used to output a sampling voltage of the sampling circuit to the comparison circuit;

[0008] A comparison circuit, wherein an output terminal of the comparison circuit is electrically connected to an input terminal of the self-locking circuit, and is used to output a first signal to the self-locking circuit when the sampling voltage is higher than the reference voltage;

[0009] A self-locking circuit, wherein the output end of the self-locking circuit is electrically connected to the control end of the switch circuit, and is used to lock the state of outputting a second signal to the control end of the switch circuit in response to a first signal, wherein the second signal is used to control the switch circuit to disconnect, wherein the first end of the switch circuit is electrically connected to the electrical appliance, and the second end of the switch circuit is electrically connected to the power supply of the electrical appliance.

[0010] In a second aspect, an embodiment of the present application provides a vehicle, comprising the vehicle protection system shown in any one of the embodiments of the first aspect.

[0011] In the vehicle protection system and vehicle of the embodiment of the present application, when the current of the electrical appliance is too large, it can be considered that the electrical appliance is abnormal. Since the sampling circuit is connected in series with the electrical appliance, the current of the sampling circuit is consistent with that of the electrical appliance. Therefore, when the electrical appliance is abnormal, the current of the sampling circuit will also increase. The increase in the current of the sampling circuit will cause the sampling voltage of the sampling circuit to increase. Therefore, it can be considered that the electrical appliance is abnormal when the sampling voltage is higher than the reference voltage. When the sampling voltage is higher than the reference voltage, the comparison circuit can output a first signal to the self-locking circuit, so that the self-locking circuit locks the state of outputting a second signal to the control end of the switch circuit. The second signal can be disconnected by using the switch circuit between the electrical appliance and the power supply, thereby powering off the electrical appliance. In this way, the electrical appliance is powered off in time when the electrical appliance is abnormal, thereby avoiding damage to the electrical appliance. By locking the state of outputting the second signal to the control end of the switch circuit by the self-locking circuit, it can be avoided that the sampling voltage is lower than the reference voltage after the switch circuit is disconnected, thereby avoiding the switch circuit from being reclosed after a short disconnection, thereby avoiding powering on the electrical appliance without eliminating the abnormality of the electrical appliance, and more reliably protecting the electrical appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0013] Figure 1 This is one of the structural schematic diagrams of a vehicle protection system provided by an embodiment of the present application;

[0014] Figure 2 This is a second structural schematic diagram of a vehicle protection system provided by an embodiment of the present application;

[0015] Figure 3 This is a third structural diagram of a vehicle protection system provided by an embodiment of the present application;

[0016] Figure 4 This is a fourth structural diagram of a vehicle protection system provided by an embodiment of the present application;

[0017] Figure 5 This is a fifth structural diagram of a vehicle protection system provided by an embodiment of the present application;

[0018] Figure 6 This is a sixth structural diagram of a vehicle protection system provided by an embodiment of the present application;

[0019] Figure 7 It is a schematic diagram of a processing flow of a controller provided in one embodiment of the present application. DETAILED DESCRIPTION

[0020] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. 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 terms "include", "comprise" or any other variants thereof are 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 statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0022] As mentioned in the background art, in order to improve vehicle performance, it is necessary to perform health checks on various components of the vehicle so that protective measures can be taken in a timely manner when abnormalities are found in the vehicle components.

[0023] In the era of fuel vehicles, vehicle health checks mainly focus on the mechanical structure of vehicle components, which can be observed with the naked eye or observation instruments.

[0024] With the vigorous development of the vehicle industry, more and more electrical appliances are installed in vehicles, and the health of electrical appliances is an important factor affecting vehicle stability. However, the health of electrical appliances cannot be directly observed by the naked eye or observation instruments, and it is also impossible to perform health detection of electrical appliances in real time through the naked eye or observation instruments. Therefore, it is impossible to take protective measures in time when electrical appliances are abnormal, which can easily lead to damage to electrical appliances and affect vehicle performance.

[0025] In order to solve the above technical problems, the embodiment of the present application provides a vehicle protection system and a vehicle. When the current of an electrical appliance is too large, it can be considered that the electrical appliance is abnormal. Since the sampling circuit is connected in series with the electrical appliance, the current of the sampling circuit is consistent with that of the electrical appliance. Therefore, when the electrical appliance is abnormal, the current of the sampling circuit will also increase. The increase in the current of the sampling circuit will cause the sampling voltage of the sampling circuit to increase. Therefore, it can be considered that the electrical appliance is abnormal when the sampling voltage is higher than the reference voltage. When the sampling voltage is higher than the reference voltage, the comparison circuit can output a first signal to the self-locking circuit, so that the self-locking circuit locks the state of outputting a second signal to the control end of the switch circuit. The second signal can be disconnected by using the switch circuit between the electrical appliance and the power supply, thereby powering off the electrical appliance. In this way, the electrical appliance is powered off in time when the electrical appliance is abnormal, thereby avoiding damage to the electrical appliance. By locking the state of outputting the second signal to the control end of the switch circuit by the self-locking circuit, it can be avoided that the sampling voltage is lower than the reference voltage after the switch circuit is disconnected, thereby avoiding the switch circuit from being reclosed after a short disconnection, thereby avoiding powering on the electrical appliance without eliminating the abnormality of the electrical appliance, and more reliably protecting the electrical appliance.

[0026] Combine the following Figure 1 The vehicle protection system provided in the embodiment of the present application is described in detail.

[0027] Figure 1 A schematic structural diagram of a vehicle protection system provided by an embodiment of the present application is shown.

[0028] like Figure 1 As shown, the vehicle protection system 100 may include: a sampling circuit 110 , a comparison circuit 120 and a self-locking circuit 130 .

[0029] The sampling circuit 110 may be connected in series with the electrical appliances of the vehicle, and the sampling circuit 110 may be electrically connected to the first input terminal of the comparison circuit 120 , and may be used to output the sampling voltage of the sampling circuit 110 to the comparison circuit 120 .

[0030] The sampling circuit 110 may include a sampling resistor, and the sampling resistor may be a resistor with a relatively small resistance.

[0031] The sampling voltage may be a voltage of the sampling circuit 110 .

[0032] Since the sampling circuit 110 is connected in series with the electrical appliances of the vehicle, the current of the sampling circuit 110 is the same as the current of the electrical appliances. If the current of the electrical appliances is too large due to an abnormality in the electrical appliances, the current of the sampling circuit 110 will also be too large. Since the resistance of the sampling circuit 110 remains unchanged, the voltage of the sampling circuit, that is, the sampling voltage, will be too large. In other words, an excessively large sampling voltage can indicate an abnormality in the electrical appliances.

[0033] For example, the electrical appliances may include a wiper controller, a pedal sensor, or a headlight, etc. The electrical appliance abnormality may include electrical appliances being immersed in water, electrical appliances being aged, or electrical appliances being overheated, etc.

[0034] The output terminal of the comparison circuit 120 may be electrically connected to the input terminal of the self-locking circuit 130 , and may be used to output a first signal to the self-locking circuit 130 when the sampling voltage is higher than the reference voltage.

[0035] The comparison circuit 120 may include a comparator.

[0036] The voltage input to the first input terminal of the comparison circuit 120 may be the sampling voltage of the sampling circuit 110, and the voltage input to the second input terminal of the comparison circuit 120 may be a reference voltage. The reference voltage may be set according to actual requirements.

[0037] If the sampled voltage is higher than the reference voltage, it can indicate that the electrical appliance is abnormal.

[0038] The first input terminal of the comparison circuit 120 can be a non-inverting input terminal, and the second input terminal of the comparison circuit 120 can be an inverting input terminal. When the sampling voltage input to the non-inverting input terminal is less than or equal to the reference voltage input to the inverting input terminal, the output terminal of the comparison circuit 120 outputs a low level. When the sampling voltage input to the non-inverting input terminal is greater than the reference voltage input to the inverting input terminal, the output terminal of the comparison circuit 120 outputs a high level, that is, a first signal.

[0039] The first signal may be at a high level and may trigger the self-locking circuit 130 to lock the state of outputting the second signal to the control terminal of the switch circuit 200 .

[0040] The output end of the self-locking circuit 130 can be electrically connected to the control end of the switch circuit 200, and can be used to lock the state of outputting a second signal to the control end of the switch circuit 200 in response to a first signal. The second signal can be used to control the switch circuit 200 to disconnect. The first end of the switch circuit 200 can be electrically connected to an electrical appliance, and the second end of the switch circuit 200 can be electrically connected to a power source of the electrical appliance.

[0041] When the comparison circuit 120 inputs a high level to the self-locking circuit 130, the self-locking circuit 130 can be triggered to output a second signal to the control end of the switch circuit 200 and lock the state of outputting the second signal to the control end of the switch circuit 200. Even if the high level is stopped from being input to the self-locking circuit 130 or other signals are input to the self-locking circuit 130, the self-locking circuit 130 can still output the second signal to the control end of the switch circuit 200.

[0042] The second signal may be a signal that triggers the switch circuit 200 to be turned off. The self-locking circuit 130 continuously outputs the second signal to the control terminal of the switch circuit, so that the switch circuit 200 can remain in the turned-off state.

[0043] The switch circuit 200 is disconnected, which specifically means that the first end and the second end of the switch circuit 200 are disconnected, so that the electrical appliance is disconnected from the power source, that is, the electrical appliance is powered off. When an electrical appliance is abnormal, the electrical appliance is powered off in time to protect the electrical appliance and avoid damage to the electrical appliance.

[0044] The switch circuit 200 may be a relay or a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET).

[0045] Therefore, when the current of the electrical appliance is too large, it can be considered that the electrical appliance is abnormal. Since the sampling circuit is connected in series with the electrical appliance, the current of the sampling circuit is consistent with that of the electrical appliance. Therefore, when the electrical appliance is abnormal, the current of the sampling circuit will also increase. The increase in the current of the sampling circuit will cause the sampling voltage of the sampling circuit to increase. Therefore, it can be considered that the electrical appliance is abnormal when the sampling voltage is higher than the reference voltage. When the sampling voltage is higher than the reference voltage, the comparison circuit can output a first signal to the self-locking circuit, so that the self-locking circuit locks the state of outputting a second signal to the control end of the switch circuit. The second signal can be disconnected by the switch circuit between the electrical appliance and the power supply, thereby powering off the electrical appliance. In this way, the electrical appliance is powered off in time when the electrical appliance is abnormal, thereby avoiding damage to the electrical appliance. By locking the state of outputting the second signal to the control end of the switch circuit by the self-locking circuit, it can be avoided that the sampling voltage is lower than the reference voltage after the switch circuit is disconnected, thereby avoiding the switch circuit from being reclosed after a short disconnection, thereby avoiding powering on the electrical appliance without eliminating the abnormality of the electrical appliance, and more reliably protecting the electrical appliance.

[0046] In some embodiments, in order to facilitate the use of the appliance to resume normal operation, such as Figure 2 As shown, the vehicle protection system 100 may further include: a controller 140 .

[0047] The output end of the controller 140 may be electrically connected to the input end of the self-locking circuit 130 and may be used to send a release instruction to the self-locking circuit 130;

[0048] The self-locking circuit 130 can also be used to release the state of outputting the second signal to the control terminal of the switch circuit 200 in response to a release instruction, and control the switch circuit 200 to close.

[0049] Here, the controller 140 may be a microcontroller unit (MCU).

[0050] Specifically, after checking that there is no abnormality in the electrical appliance or repairing the abnormality of the electrical appliance, the controller 140 can send a release instruction to the self-locking circuit 130. The release instruction can be used to trigger the self-locking circuit 130 to release the locked state and control the switch circuit 200 to close. In this way, power can be supplied to the electrical appliance again, and the electrical appliance can resume normal working state.

[0051] In this way, after the electrical appliances return to normal, the controller can be used to control the electrical appliances to resume normal operation.

[0052] In some implementations, in order to flexibly set the reference voltage of the comparison circuit, such as Figure 3 As shown, the vehicle protection system 100 may further include: a digital potentiometer 150 .

[0053] The input end of the digital potentiometer 150 can be electrically connected to the output end of the controller 140, and the output end of the digital potentiometer 150 can be electrically connected to the second input end of the comparison circuit 120, and can be used to output a reference voltage to the comparison circuit 120 in response to a voltage output instruction sent by the controller 140.

[0054] Here, the voltage output instruction may carry a voltage value, and may be used to indicate the voltage value output by the digital potentiometer 150 .

[0055] Specifically, the controller 140 can control the voltage value output by the digital potentiometer 150 through a voltage output instruction. The output terminal of the digital potentiometer 150 is connected to the second input terminal of the comparison circuit 120, so the controller 140 can control the reference voltage of the comparison circuit 120.

[0056] The reference voltages corresponding to different electrical appliances may be different.

[0057] In this way, by controlling the voltage value output by the digital potentiometer through the controller, the reference voltage of the comparison circuit can be flexibly set to adapt to different electrical appliances.

[0058] In some implementations, in order to facilitate users to promptly discover abnormalities in electrical appliances, such as Figure 4 As shown, the vehicle protection system 100 may further include: a cloud device 160 and a telematics processor 170 .

[0059] The cloud device 160 can be connected to the telematics processor 170. The cloud device 160 and the telematics processor (Telematics BOX, TBOX) 170 can be connected via a mobile communication network to achieve long-distance communication.

[0060] The cloud device 160 may be a cloud server.

[0061] The telematics processor 170 may be electrically connected to an output terminal of the controller 140 .

[0062] The input end of the controller 140 can also be electrically connected to the sampling circuit 110, so that the controller 140 can obtain the sampling voltage of the sampling circuit 110, and then the controller 140 can also be used to determine the detection result of the electrical appliance based on the sampling voltage, the resistance of the sampling circuit 110 and the voltage of the electrical appliance. When the detection result indicates that the electrical appliance is abnormal, the controller 140 sends abnormal information to the remote information processor 170, and the abnormal information can indicate that the electrical appliance is abnormal.

[0063] The resistance of the sampling circuit 110 may be predetermined, and the voltage of the electrical appliance may be acquired by other systems and then sent to the controller 140 .

[0064] The detection result of the electrical appliance can indicate whether the electrical appliance is abnormal. If the detection result indicates that the electrical appliance is abnormal, the controller 140 can send abnormal information to the telematics processor 170, and the abnormal information can indicate that the electrical appliance is abnormal; if the detection result indicates that the electrical appliance is not abnormal, the controller 140 may not send abnormal information to the telematics processor 170.

[0065] The telematics processor 170 may be used to report abnormal information to the cloud device 160 .

[0066] After the controller 140 sends the abnormal information to the telematics processor 170 , the telematics processor 170 may report the abnormal information to the cloud device 160 .

[0067] The cloud device 160 can be used to send prompt information to the user device based on the abnormal information to prompt the user that there is an abnormality in the electrical appliance.

[0068] Exemplarily, the user device may be a device in a vehicle, such as a display of the vehicle; or may be an electronic device carried by a user, such as a mobile phone of the user.

[0069] Specifically, the cloud device 160 may be a server of an application, and the cloud device 160 may send prompt information to the application of the user device.

[0070] The prompt information can be used to inform the user that there is an abnormality in the electrical appliance.

[0071] After receiving the prompt information, the user can take corresponding measures, such as repairing or replacing the electrical appliance.

[0072] In this way, when the detection result of the electrical appliance indicates that there is an abnormality in the electrical appliance, the abnormal information is reported to the cloud device through the remote information processor, so that the cloud device sends a prompt message to the user device, which can help the user to discover the abnormality of the electrical appliance in time.

[0073] In some embodiments, in order to promptly and accurately notify the user when an abnormality occurs in an electrical appliance, the controller 140 and the telematics processor 170 may be connected via a controller area network bus.

[0074] The Controller Area Network (CAN) bus has the advantages of strong real-time performance, long transmission distance, strong anti-electromagnetic interference ability and low cost.

[0075] In this way, the controller and the telematics processor can communicate via the CAN bus and report abnormal information more quickly and accurately, so as to promptly and accurately notify the user when an abnormality occurs in an electrical appliance.

[0076] In some implementations, in order to accurately determine the detection result of the electrical appliance, the controller may be specifically used to:

[0077] determining the current of the electrical appliance based on the sampled voltage and the resistance of the sampling circuit;

[0078] Determine the power of the electrical appliance based on the current and the voltage of the electrical appliance;

[0079] The detection result of the electrical appliance is determined based on the power and the preset range.

[0080] Here, the current of the sampling circuit can be determined based on the sampling voltage and the resistance of the sampling circuit, and the current of the electrical appliance is equal to the current of the sampling circuit.

[0081] Specifically, the current of the electrical appliance may be equal to the ratio of the sampling voltage to the resistance of the sampling circuit. The power of the electrical appliance may be equal to the product of the current of the electrical appliance and the voltage of the electrical appliance.

[0082] The detection result of the electrical appliance can be determined based on the power of the electrical appliance and the preset range.

[0083] In this way, the detection result of the electrical appliance can be accurately determined by calculating the power of the electrical appliance.

[0084] In some embodiments, the controller may be specifically configured to:

[0085] When the power of the electrical appliance exceeds a preset range, determining that the detection result of the electrical appliance indicates that the electrical appliance is abnormal;

[0086] When the power of the electrical appliance does not exceed a preset range, it is determined that the detection result of the electrical appliance indicates that there is no abnormality in the electrical appliance.

[0087] In some embodiments, the electrical appliance may have multiple working modes, and the normal power of the electrical appliance in different working modes is different. In order to more accurately determine the detection result of the electrical appliance, different working modes may correspond to different preset ranges;

[0088] The controller can be used for:

[0089] Determine the target working mode of the electrical appliance;

[0090] The detection result of the electrical appliance is determined based on a preset range corresponding to the power and the target operating mode.

[0091] Here, the electrical appliance may have multiple operating modes. For example, if the electrical appliance is a vehicle lamp, the multiple operating modes may include a high beam and a low beam.

[0092] Specifically, the normal power of electrical appliances in different working modes is different. Therefore, in order to accurately determine the detection results of electrical appliances, different preset ranges can be set in advance for different working modes. When it is necessary to determine the detection results of electrical appliances, first determine the current target working mode of the electrical appliance, and then determine the detection results of the electrical appliance based on the preset range corresponding to the target working mode and the power of the electrical appliance.

[0093] In this way, the detection result of the electrical appliance is determined according to the preset range corresponding to the current working mode of the electrical appliance, so that the detection result of the electrical appliance can be determined more accurately.

[0094] In some embodiments, in order to accurately determine the detection results of the electrical appliances, such as Figure 5 As shown, the vehicle protection system 100 may further include: an amplifier circuit 180 .

[0095] The input end of the amplifier circuit 180 may be electrically connected to the sampling circuit 110 , and the output end of the amplifier circuit 180 may be electrically connected to the input end of the controller 140 , and may be used to amplify the sampling voltage and output the amplified sampling voltage to the controller 140 .

[0096] The amplifying circuit 180 may be an amplifier.

[0097] The original analog-to-digital converter (ADC) value of the sampled voltage is usually very small. To facilitate subsequent calculations, the original ADC value of the sampled voltage can be input into the amplifier circuit 180, and then the amplifier circuit 180 can amplify the original ADC value of the sampled voltage and output the amplified sampled voltage.

[0098] The controller 140 may also be used to determine a detection result of the electrical appliance based on the amplified sampled voltage, the resistance of the sampling circuit 110 and the voltage of the electrical appliance.

[0099] In this way, by amplifying the sampled voltage, it is possible to accurately determine the detection result of the electrical appliance through subsequent calculation.

[0100] In some implementations, in order to accurately determine the detection result of the electrical appliance, the controller may be specifically used to:

[0101] determining the current of the electrical appliance based on the amplified sampled voltage and the resistance of the sampling circuit;

[0102] Determine the power of the electrical appliance based on the current and the voltage of the electrical appliance;

[0103] The detection result of the electrical appliance is determined based on the power and the preset range.

[0104] Here, the current of the sampling circuit can be determined based on the amplified sampling voltage and the resistance of the sampling circuit, and the current of the electrical appliance is equal to the current of the sampling circuit.

[0105] Specifically, the current of the electrical appliance may be equal to the ratio of the amplified sampling voltage to the resistance of the sampling circuit. The power of the electrical appliance may be equal to the product of the current of the electrical appliance and the voltage of the electrical appliance.

[0106] Exemplarily, the current of the electrical appliance is I, the voltage of the electrical appliance is U, and the power of the electrical appliance is P=UI.

[0107] The preset range may be a normal power range of the electrical appliance. The detection result of the electrical appliance may be determined based on the power of the electrical appliance and the preset range.

[0108] In this way, the detection result of the electrical appliance can be accurately determined by calculating the power of the electrical appliance.

[0109] In some embodiments, the controller may be specifically configured to:

[0110] When the power of the electrical appliance exceeds a preset range, determining that the detection result of the electrical appliance indicates that the electrical appliance is abnormal;

[0111] When the power of the electrical appliance does not exceed a preset range, it is determined that the detection result of the electrical appliance indicates that there is no abnormality in the electrical appliance.

[0112] Exemplarily, the normal power range of the wiper controller, that is, the preset range is P1~P2, and the current power of the wiper controller is P3. If P3 is between P1 and P2, it can be determined that the detection result of the wiper controller is that there is no abnormality in the wiper controller. If P3 is not between P1 and P2, it can be determined that the detection result of the wiper controller is that there is an abnormality in the wiper controller.

[0113] In some embodiments, the electrical appliance may have multiple working modes, and the normal power of the electrical appliance in different working modes is different. In order to more accurately determine the detection result of the electrical appliance, different working modes may correspond to different preset ranges;

[0114] The controller can be used for:

[0115] Determine the target working mode of the electrical appliance;

[0116] The detection result of the electrical appliance is determined based on a preset range corresponding to the power and the target operating mode.

[0117] Here, the electrical appliance may have multiple operating modes. For example, if the electrical appliance is a vehicle lamp, the multiple operating modes may include a high beam and a low beam.

[0118] Specifically, the normal power of the electrical appliance is different in different working modes. Therefore, in order to accurately determine the detection result of the electrical appliance, different preset ranges can be set in advance for different working modes. The preset range corresponding to each working mode can be set according to actual needs, and the target working mode can be the working mode that the electrical appliance is currently in. When it is necessary to determine the detection result of the electrical appliance, the current target working mode of the electrical appliance is first determined, and then the detection result of the electrical appliance is determined based on the preset range corresponding to the target working mode and the power of the electrical appliance.

[0119] In this way, the detection result of the electrical appliance is determined according to the preset range corresponding to the current working mode of the electrical appliance, so that the detection result of the electrical appliance can be determined more accurately.

[0120] In some implementations, in order to accurately determine the detection result of the electrical appliance, the controller may be specifically used to:

[0121] When the power exceeds a preset range corresponding to the target working mode, it is determined that the detection result indicates that an abnormality exists in the electrical appliance.

[0122] When the power does not exceed a preset range corresponding to the target working mode, it is determined that the detection result indicates that there is no abnormality in the electrical appliance.

[0123] The preset range corresponding to the target working mode may be a normal power range of the electrical appliance under the target working mode.

[0124] In this way, by judging whether the power of the electrical appliance exceeds a preset range corresponding to the target working mode of the electrical appliance, the detection result of the electrical appliance can be accurately determined.

[0125] In order to better describe the entire solution, based on the above embodiments, a specific example is given. Figure 6As shown, the vehicle protection system 100 may include: a sampling circuit 110 , a comparison circuit 120 , a self-locking circuit 130 , a controller 140 , a digital potentiometer 150 , a cloud device 160 , a telematics processor 170 , and an amplifier circuit 180 .

[0126] Among them, the sampling circuit 110 is electrically connected to the first input end of the comparison circuit 120 and the input end of the amplifier circuit 180 respectively, the second input end of the comparison circuit 120 is electrically connected to the digital potentiometer 150, the output end of the comparison circuit 120 is electrically connected to the input end of the self-locking circuit 130, and the output end of the self-locking circuit 130 is electrically connected to the control end of the switch circuit 200. The output end of the amplifier circuit 180 is electrically connected to the input end of the controller 140, and the output end of the controller 140 is electrically connected to the input end of the digital potentiometer 150 and the input end of the self-locking circuit 130 respectively. The output end of the controller 140 is also electrically connected to the telematics processor 170, and the telematics processor 170 is electrically connected to the cloud device 160.

[0127] In order to better describe the entire solution, based on the above embodiments, a specific example is given. Figure 7 As shown, the workflow of the controller may include S701-S707, which are as follows:

[0128] S701, obtaining the amplified sampled voltage and the voltage of the electrical appliance;

[0129] S702, determining the current of the electrical appliance based on the amplified sampled voltage and the resistance of the sampling circuit.

[0130] S703, determining the power of the electrical appliance based on the current and the voltage of the electrical appliance.

[0131] S704: Determine the target working mode of the electrical appliance.

[0132] S705: Determine a preset range corresponding to the target working mode.

[0133] S706, determining whether the power of the electrical appliance exceeds a preset range corresponding to the target working mode.

[0134] If yes, execute S707; if no, return to execute S701.

[0135] S707: Report abnormal information.

[0136] The specific process of S701-S707 can be found in the above embodiment and will not be described again here.

[0137] An embodiment of the present application also provides a vehicle, which may include the vehicle protection system shown in any of the above embodiments.

[0138] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A vehicle protection system, characterized in that: The system comprises: A sampling circuit, wherein the sampling circuit is connected in series with the electrical appliance of the vehicle, and the sampling circuit is electrically connected to the first input terminal of the comparison circuit, and is used to output a sampling voltage of the sampling circuit to the comparison circuit; The comparison circuit, wherein the output end of the comparison circuit is electrically connected to the input end of the self-locking circuit, and is used to output a first signal to the self-locking circuit when the sampling voltage is higher than the reference voltage; The self-locking circuit, the output end of the self-locking circuit is electrically connected to the control end of the switch circuit, and is used to lock the state of outputting a second signal to the control end of the switch circuit in response to the first signal, the second signal is used to control the switch circuit to disconnect, the first end of the switch circuit is electrically connected to the electrical appliance, and the second end of the switch circuit is electrically connected to the power supply of the electrical appliance.

2. The system according to claim 1, characterized in that The system further comprises: A controller, wherein an output end of the controller is electrically connected to an input end of the self-locking circuit, and is used to send a release instruction to the self-locking circuit; The self-locking circuit is further used to release the state of outputting the second signal to the control end of the switch circuit in response to the release instruction, and control the switch circuit to close.

3. The system according to claim 2, characterized in that The system further comprises: A digital potentiometer, wherein the input end of the digital potentiometer is electrically connected to the output end of the controller, and the output end of the digital potentiometer is electrically connected to the second input end of the comparison circuit, and is used to output the reference voltage to the comparison circuit in response to a voltage output instruction sent by the controller.

4. The system according to claim 2 or 3, characterized in that: The system further comprises: A cloud device, communicating with the telematics processor; The telematics processor is electrically connected to an output terminal of the controller; The input end of the controller is also electrically connected to the sampling circuit, and the controller is further used to determine the detection result of the electrical appliance based on the sampled voltage, the resistance of the sampling circuit and the voltage of the electrical appliance, and send abnormal information to the telematics processor when the detection result indicates that the electrical appliance is abnormal, wherein the abnormal information indicates that the electrical appliance is abnormal; The telematics processor is used to report the abnormal information to the cloud device; The cloud device is used to send prompt information to the user device based on the abnormal information to prompt the user that the electrical appliance has an abnormality.

5. The system according to claim 4, characterized in that The system further comprises: an amplifier circuit, wherein an input end of the amplifier circuit is electrically connected to the sampling circuit, and an output end of the amplifier circuit is electrically connected to an input end of the controller, and is used to amplify the sampling voltage and output the amplified sampling voltage to the controller; The controller is also used to determine the detection result of the electrical appliance based on the amplified sampling voltage, the resistance of the sampling circuit and the voltage of the electrical appliance.

6. The system according to claim 5, characterized in that The controller is specifically used for: determining the current of the electrical appliance based on the amplified sampled voltage and the resistance of the sampling circuit; determining the power of the electrical appliance based on the current and the voltage of the electrical appliance; A detection result of the electrical appliance is determined based on the power and a preset range.

7. The system according to claim 6, characterized in that The electrical appliance has multiple working modes, and different working modes correspond to different preset ranges; The controller is specifically used for: Determining a target operating mode of the electrical appliance; The detection result of the electrical appliance is determined based on a preset range corresponding to the power and the target operating mode.

8. The system according to claim 7, characterized in that The controller is specifically used for: In the case where the power exceeds a preset range corresponding to the target working mode, it is determined that the detection result indicates that an abnormality exists in the electrical appliance.

9. The system according to claim 4, characterized in that The controller is connected to the telematics processor via a controller area network bus.

10. A vehicle, characterized in that: The invention comprises a vehicle protection system as claimed in any one of claims 1 to 9.

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