Vehicle scraping detection circuit, vehicle and method

Abstract

The invention relates to a vehicle scraping detection circuit, a vehicle and a method. The vehicle scraping detection circuit comprises a vibration sensing module and a control module. The output end of the vibration sensing module is electrically connected with the input end of the control module, and the vibration sensing module is used for sensing the vibration state of a vehicle within the sensing range of the vibration sensing module and outputting a vibration state signal; and the control module is used for receiving the vibration state signal and recording the time when the vehicle is scratched based on the vibration state signal. When scraping occurs, the vibration sensing module generates the vibration state signal and outputs the vibration state signal to the control module, the control module records the time when the vibration state signal is received as the time when the vehicle is scratched, and therefore the purpose that the time when the vehicle is scratched is accurately recorded through the vibration sensing module and the control module is achieved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automobile safety, and in particular to a vehicle scratch detection circuit, a vehicle and a method. Background Art

[0002] As people's living standards improve, cars are becoming more and more popular as a means of transportation. When a car is driving or parked, it may scratch other objects or be scratched by other objects, causing paint damage. Most existing technologies use cameras or rely on the sentinel mode of cameras to monitor and collect evidence of scratching. However, after a scratch occurs, it takes a long time to view the camera playback to locate the specific time when the scratch occurred. Summary of the invention

[0003] In order to solve the above technical problems, the present disclosure provides a vehicle scratch detection circuit, a vehicle and a method. When a scratch occurs, the present disclosure generates a vibration status signal through a vibration sensing module and outputs it to a control module. The control module records the time when the vibration status signal is received as the time when the vehicle scratch occurs, thereby realizing the accurate recording of the time when the vehicle scratch occurs through the vibration sensing module and the control module.

[0004] The disclosed embodiment provides a vehicle scratch detection circuit, including a vibration sensing module and a control module;

[0005] The output end of the vibration sensing module is electrically connected to the input end of the control module, and the vibration sensing module is used to sense the vibration state of the vehicle within its own sensing range and output a vibration state signal;

[0006] The control module is used to receive the vibration state signal, and when determining that a scratch occurs on the vehicle based on the vibration state signal, record the time when the scratch occurs on the vehicle.

[0007] Optionally, the vibration state signal includes a first level signal or a second level signal, and one of the first level signal and the second level signal is a high level signal, and the other is a low level signal;

[0008] The vibration sensing module outputs the first level signal when sensing vibration; and outputs the second level signal when not sensing vibration.

[0009] Optionally, the vibration sensing module includes a power supply, a vibration switch, a first voltage dividing unit, a second voltage dividing unit and a comparator;

[0010] The first end of the first voltage dividing unit and the first end of the second voltage dividing unit are both electrically connected to the power supply;

[0011] The first end of the vibration switch and the voltage dividing end of the first voltage dividing unit are both electrically connected to the first input end of the comparator;

[0012] The voltage dividing end of the second voltage dividing unit is electrically connected to the second input end of the comparator; the second end of the first voltage dividing unit and the second end of the vibration switch are electrically connected to the second end of the second voltage dividing unit respectively; and the output end of the comparator outputs the vibration state signal.

[0013] Optionally, the first voltage dividing unit includes a first resistor and a first capacitor connected in series;

[0014] The first end of the first resistor is electrically connected to the power supply, the second end of the first resistor and the first end of the first capacitor are both electrically connected to the first input end of the comparator, and the vibration switch is connected in parallel with the first capacitor.

[0015] Optionally, the vehicle scratch detection circuit further includes a power indication unit and / or a switch indication unit;

[0016] The first end of the power indication unit and the first end of the switch indication unit are both electrically connected to the power supply, the second end of the power indication unit is grounded, and the second end of the switch indication unit is electrically connected to the output end of the comparator;

[0017] The power indication unit is used to indicate the start-up state of the vehicle scratch detection circuit, and the switch indication unit is used to indicate the working state of the vibration sensing module.

[0018] The embodiment of the present disclosure further provides a vehicle, comprising a vehicle computer and at least one vehicle scratch detection circuit as described above; the vehicle scratch detection circuit is arranged on the vehicle body, and the vehicle computer is communicatively connected with a control module of the vehicle scratch detection circuit;

[0019] The vehicle computer is used to obtain the time when the vehicle is scratched recorded by the control module.

[0020] Optionally, the vehicle includes a plurality of the vehicle scratch detection circuits arranged in a distributed manner.

[0021] Optionally, the vehicle further includes an on-board surveillance camera, and the sensing range of the vibration sensing module of one or more of the vehicle scratch detection circuits covers the monitoring blind spots of the on-board surveillance camera.

[0022] The present disclosure also provides a vehicle scratch detection method, which is applied to the vehicle as described above and is characterized by comprising:

[0023] Monitor the triggering event of vehicle scratch time retrieval;

[0024] In response to the trigger event, the time when the vehicle is scratched and recorded by the control module is obtained.

[0025] Optionally, also include:

[0026] Obtaining a circuit identifier corresponding to a control module that records the time when a vehicle scratch occurs;

[0027] Based on the circuit identifier, the corresponding relationship between the circuit identifier and the arrangement position of the vehicle scratch detection circuit is found to determine the position of the vehicle scratch.

[0028] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0029] In the solution provided by the embodiment of the present disclosure, a vibration sensing module and a control module are provided on the vehicle, and the output end of the vibration sensing module is electrically connected to the input end of the control module, so that when the vibration sensing module senses the occurrence of vibration, the vibration output signal can be sent to the control module. When a scratch occurs on the vehicle, the scratched part of the vehicle will vibrate, and the vibration sensing module near the vibration will generate a vibration state signal based on the vibration and output it to the control module. The control module records the time when the vibration state signal is received as the time when the vehicle is scratched, thereby realizing the accurate recording of the time when the vehicle is scratched through the vibration sensing module and the control module. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0032] Figure 1 A vehicle scratch detection circuit diagram provided by an embodiment of the present disclosure;

[0033] Figure 2 Another vehicle scratch detection circuit diagram provided by the embodiment of the present disclosure;

[0034] Figure 3 Another vehicle scratch detection circuit diagram provided by the embodiment of the present disclosure;

[0035] Figure 4 Another vehicle scratch detection circuit diagram provided by the embodiment of the present disclosure;

[0036] Figure 5Another vehicle scratch detection circuit diagram provided by the embodiment of the present disclosure;

[0037] Figure 6 A schematic diagram of a distributed arrangement of a vehicle scratch detection circuit provided by an embodiment of the present disclosure;

[0038] Figure 7 A flow chart of a vehicle scratch detection method provided by an embodiment of the present disclosure;

[0039] Figure 8 A flow chart of another vehicle scratch detection method provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0040] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0042] Figure 1 A vehicle scratch detection circuit diagram provided by an embodiment of the present disclosure, such as Figure 1 As shown, the vehicle scratch detection circuit includes a vibration sensing module 100 and a control module 200 .

[0043] The output terminal 101 of the vibration sensing module 100 is electrically connected to the input terminal 201 of the control module 200 . The vibration sensing module 100 is used to sense the vibration state of the vehicle within its own sensing range and output a vibration state signal.

[0044] Specifically, a vibration sensing module 100 and a control module 200 are provided on the vehicle, and an output terminal 101 of the vibration sensing module 100 is electrically connected to an input terminal 201 of the control module 200, thereby realizing signal transmission between the vibration sensing module 100 and the control module 200. Since the sensing range of the vibration sensing module 100 is limited, only when the vibration sensing module 100 near the scratched part of the vehicle senses the occurrence of vibration, will it generate a vibration state signal according to the vibration state of the vehicle, and transmit it to the control module 200 through the output terminal 101 of the vibration sensing module 100.

[0045] The control module 200 is used to receive the vibration state signal, and when determining that a scratch occurs on the vehicle based on the vibration state signal, record the time when the scratch occurs on the vehicle.

[0046] Specifically, the control module 200 receives the vibration status signal generated by the vibration sensing module 100 through the input terminal 201 of the control module 200. Since the vibration sensing module 100 will quickly send the generated vibration status signal to the control module 200 when the vehicle is scratched, the time when the control module 200 receives the vibration status signal can be regarded as the time when the vehicle is scratched, thereby enabling the control module 200 to determine and record the time when the vehicle is scratched based on the vibration status signal.

[0047] The embodiment of the disclosure sets a vibration sensing module 100 and a control module 200 on the vehicle, so that when the vibration sensing module 100 senses the occurrence of vibration, it can quickly send a vibration output signal to the control module 200. When a scratch occurs on the vehicle, the scratched part of the vehicle will vibrate, and the vibration sensing module 100 near the vibration generates a vibration state signal based on the vibration and outputs it to the control module 200. The control module 200 records the time when the vibration state signal is received as the time when the vehicle is scratched, thereby realizing the accurate recording of the time when the vehicle is scratched through the vibration sensing module 100 and the control module 200.

[0048] In some embodiments, the vibration state signal includes a first level signal or a second level signal, and one of the first level signal and the second level signal is a high level signal, and the other is a low level signal.

[0049] The vibration sensing module outputs a first level signal when sensing vibration; and outputs a second level signal when not sensing vibration.

[0050] Specifically, since the switching speed of the high and low level signals is extremely fast, the level signal can be used as a vibration state signal. When the vehicle is parked normally, that is, no vibration occurs, the vibration sensing module continuously outputs the second level signal, and when vibration occurs, the vibration state signal output by the vibration sensing module can quickly switch the second level signal to the first level signal. When the control module senses that the second level signal is switched to the first level signal, it can be considered that the vehicle has been scratched, so the time of the level signal switching can be recorded as the time when the scratch occurred, thereby realizing the rapid and accurate recording of the time when the vehicle was scratched by switching the high and low level signals.

[0051] Figure 2 Another vehicle scratch detection circuit diagram provided by the embodiment of the present disclosure is as follows: Figure 2As shown, the vibration sensing module 100 includes a power supply 110, a vibration switch 120, a first voltage dividing unit 130, a second voltage dividing unit 140 and a comparator 150; the first end 131 of the first voltage dividing unit 130 and the first end 141 of the second voltage dividing unit 140 are both electrically connected to the power supply 110; the first end 121 of the vibration switch 120 and the voltage dividing end 132 of the first voltage dividing unit 130 are both electrically connected to the first input end 151 of the comparator 150; the voltage dividing end 142 of the second voltage dividing unit 140 is electrically connected to the second input end 152 of the comparator 150; the second end 133 of the first voltage dividing unit 130 and the second end 122 of the vibration switch 120 are respectively electrically connected to the second end 143 of the second voltage dividing unit 140; the output end 153 of the comparator 150 outputs a vibration state signal.

[0052] Exemplarily, the first input terminal 151 of the comparator 150 is a non-inverting input terminal, the second input terminal 152 of the comparator 150 is an inverting input terminal, and when vibration occurs, the vibration switch 120 is disconnected as an example for description. The second terminal 133 of the first voltage divider unit 130, the second terminal 122 of the vibration switch 120, and the second terminal 143 of the second voltage divider unit 140 are electrically connected and grounded. When scratching does not occur, the vehicle does not vibrate, and the vibration switch 120 is in a closed state. At this time, the first input terminal 151 of the comparator 150 is grounded through the vibration switch 120, and the second input terminal 152 of the comparator 150 can be electrically connected to the power supply 110 through the second voltage divider unit 140. At this time, the voltage of the first input terminal 151 of the comparator 150 is less than the voltage of the second input terminal 152 of the comparator 150, and the vibration state signal output by the output terminal 153 of the comparator 150 is a continuous low-level signal. When a scratch occurs, the vehicle vibrates. At this time, the vibration sensing module near the vibration starts to work, and the vibration switch 120 is disconnected due to the vibration. At the moment when the vibration switch 120 is disconnected, the first input terminal 151 of the comparator 150 is electrically connected to the power supply 110 through the first voltage divider unit 130, and the second input terminal 152 of the comparator 150 is still electrically connected to the power supply 110 through the second voltage divider unit 140. At this time, the voltage of the first input terminal 151 of the comparator 150 is greater than the voltage of the second input terminal 152 of the comparator 150. The vibration state signal output by the output terminal 153 of the comparator 150 is switched to a high level signal at the moment of vibration, and is sent to the control module 200 through the output terminal 153 of the comparator 150. When the control module 200 senses that the low level signal is switched to a high level signal, it can be considered that the vehicle is scratched, so the time when the level signal is switched can be recorded as the time when the scratch occurs, thereby realizing the rapid and accurate recording of the time when the vehicle is scratched by switching between high and low level signals.

[0053] It should be noted that the second voltage dividing unit may be a potentiometer, and the sensitivity of the vibration sensing module may be adjusted by adjusting the potentiometer.

[0054] It should be noted that this embodiment is only described by taking the first input terminal 151 of the comparator 150 as the non-inverting input terminal, the second input terminal 152 of the comparator 150 as the inverting input terminal, and the vibration switch 120 being disconnected when vibration occurs as an example. When performing corresponding settings, those skilled in the art may also set the first input terminal 151 of the comparator 150 as the inverting input terminal and the second input terminal 152 of the comparator 150 as the non-inverting input terminal according to requirements. Or when vibration occurs, the vibration switch 120 is closed, which is not specifically limited here.

[0055] Figure 3 Another vehicle scratch detection circuit diagram provided by the embodiment of the present disclosure is as follows: Figure 3 As shown, the first voltage dividing unit 130 includes a first resistor R1 and a first capacitor C1 connected in series; the first end 134 of the first resistor R1 is electrically connected to the power supply 110, the second end 135 of the first resistor R1 and the first end 136 of the first capacitor C1 are both electrically connected to the first input end 151 of the comparator 150, and the vibration switch 120 is connected in parallel with the first capacitor C1.

[0056] Specifically, due to the elastic effect of the contact position when the vibration switch 120 is closed or opened, the vibration switch 120 will not be immediately and stably connected when closed, and will not be immediately disconnected when opened. As a result, the vibration switch 120 will be accompanied by switch jitter when it is closed or opened. Therefore, a corresponding de-jitter circuit needs to be set at the position of the vibration switch 120.

[0057] Figure 4 Another vehicle scratch detection circuit diagram provided by the embodiment of the present disclosure is as follows: Figure 4 As shown, the vehicle scratch detection circuit further includes a power indication unit 160 and / or a switch indication unit 170 .

[0058] The first end 161 of the power indication unit 160 and the first end 171 of the switch indication unit 170 are both electrically connected to the power supply 110 , the second end 162 of the power indication unit 160 is grounded, and the second end 171 of the switch indication unit 170 is electrically connected to the output end 153 of the comparator 150 .

[0059] The power indication unit 160 is used to indicate the start-up state of the vehicle scratch detection circuit, and the switch indication unit 170 is used to indicate the working state of the vibration sensing module 100 .

[0060] Specifically, when the vehicle is turned off, the power supply 110 in the vibration sensing module 100 starts to supply power. At this time, after receiving the power supply from the power supply 110, the power indication unit 160 indicates that the vibration sensing module 100 is started normally, thereby indicating that the vehicle scratch detection circuit is started normally; if the vibration sensing module 100 fails to start, the power indication unit 160 indicates that the vehicle scratch detection circuit is not started normally. When the vibration sensing module 100 starts normally, the switch indication unit 170 starts to work. When the vibration sensing module 100 senses vibration, the switch indication unit 170 starts to indicate the on and off of the vibration switch 120, thereby indicating the working state of the vibration sensing module 100.

[0061] For example, Figure 5 Another vehicle scratch detection circuit diagram provided by the embodiment of the present disclosure is as follows: Figure 5 As shown, the power indication unit 160 includes a first light emitting diode LED1, and the switch indication unit 170 includes a second light emitting diode LED2. The positive terminal of the first light emitting diode LED1 is electrically connected to the power supply 110, and the negative terminal of the first light emitting diode LED1 is grounded; the positive terminal of the second light emitting diode LED2 is electrically connected to the power supply 110, and the negative terminal of the second light emitting diode LED2 is electrically connected to the output terminal 153 of the comparator 151. When the vehicle is turned off, the power supply 110 in the vibration sensing module 100 starts to supply power, and at this time, the first light emitting diode LED1 is turned on after receiving the power supply from the power supply 110, so that it can be determined whether the vibration sensing module 100 is started normally by the lighting state of the first light emitting diode LED1, and further it can be indicated whether the vehicle scratch detection circuit is started normally.

[0062] When the vibration sensing module 100 is started normally, the second light-emitting diode LED2 starts to work, and the vehicle does not vibrate. At this time, the vibration switch 120 is in a closed state. At this time, the first input terminal 151 of the comparator 150 is grounded through the vibration switch 120, and the second input terminal 152 of the comparator 150 can be electrically connected to the power supply 110 through the second voltage divider unit 140. At this time, the voltage of the first input terminal 151 of the comparator 150 is less than the voltage of the second input terminal 152 of the comparator 150, and the vibration state signal output by the output terminal 153 of the comparator 150 is a continuous low-level signal, thereby making the potential of the cathode end of the second light-emitting diode LED2 lower than the potential of the anode end of the second light-emitting diode LED2, and the second light-emitting diode LED2 is always on. When a scratch occurs, the vehicle vibrates and the vibration switch 120 is disconnected due to the vibration. At the moment the vibration switch 120 is disconnected, the first input terminal 151 of the comparator 150 is electrically connected to the power supply 110 through the first voltage divider unit 130, and the second input terminal 152 of the comparator 150 is still electrically connected to the power supply 110 through the second voltage divider unit 140. At this time, the voltage of the first input terminal 151 of the comparator 150 is greater than the voltage of the second input terminal 152 of the comparator 150, and the vibration state signal output by the output terminal 153 of the comparator 150 is switched to a high-level signal at the moment of vibration, thereby making the potential of the cathode terminal of the second light-emitting diode LED2 greater than or equal to the potential of the anode terminal of the second light-emitting diode LED2, and the second light-emitting diode LED2 is extinguished.

[0063] It should be noted that the above embodiments only exemplify that the power indication unit and the switch indication unit may include a light-emitting diode. In actual use, other devices may also be used to indicate the start-up status of the vehicle scratch detection circuit and the working status of the vibration sensing module, which is not specifically limited here.

[0064] The disclosed embodiment also provides a vehicle, including a vehicle computer and at least one of the above-mentioned vehicle scratch detection circuits; the vehicle scratch detection circuit is arranged on the vehicle body, and the vehicle computer is communicatively connected with a control module of the vehicle scratch detection circuit; the vehicle computer is used to obtain the time when the vehicle scratch occurs recorded by the control module.

[0065] Specifically, since the vehicle will inevitably vibrate during driving, the vehicle computer needs to send a sleep command to all the vehicle scratch detection circuits on the vehicle body after the vehicle is started, so that the vehicle scratch detection circuit enters a sleep state; and only when the user turns off the vehicle and leaves the vehicle, the vehicle scratch detection circuit needs to start working and record the time when the vibration occurs. Therefore, after the vehicle is turned off, the vehicle computer needs to send a start command to all the vehicle scratch detection circuits on the vehicle body to control all the vehicle scratch detection circuits on the vehicle body to start. This avoids the vehicle scratch detection circuit from incorrectly recording the vibration state of the vehicle, thereby causing incorrect recording of the vehicle scratch situation.

[0066] After the vehicle is turned off, the vehicle scratch detection circuit starts working. When the vehicle is scratched, the vehicle scratch detection circuit will obtain the vibration of the vehicle and store the vibration time in the control module inside the vehicle scratch detection circuit. When the vehicle is started, the vehicle computer starts and reads the time when the vehicle scratched recorded in the control module through communication, so that the user can accurately obtain the time when the vehicle scratched, thereby more conveniently obtaining the specific circumstances of the accident when the vehicle scratched.

[0067] In some embodiments, a vehicle includes a plurality of distributedly arranged vehicle scratch detection circuits.

[0068] For example, Figure 6 A schematic diagram of a distributed arrangement of a vehicle scratch detection circuit provided by an embodiment of the present disclosure is shown in FIG. Figure 6 As shown, since the location where the vehicle scratches cannot be determined and the sensing range of the vehicle scratch detection circuit for vibration is limited, it is necessary to set multiple vehicle scratch detection circuits on the vehicle body. According to the length d of the sensing range of the vehicle scratch detection circuit for vibration, the vehicle scratch detection circuits are distributedly arranged, and a vehicle scratch detection circuit 300 is set at every interval of length 2d on the vehicle body, so that only one vehicle scratch detection circuit 300 detects the detection area in a detection area, thereby enabling the largest vehicle body area to be covered by setting the least vehicle scratch detection circuits, thereby reducing costs.

[0069] It should be noted that Figure 6 For the convenience of explanation, only some vehicle scratch detection circuits arranged in some areas of the vehicle are shown as examples. The specific distribution of the vehicle scratch detection circuits depends on the actual situation and is not specifically limited here.

[0070] For example, since the front of a vehicle is usually facing outward when it is parked, making the front area of ​​the vehicle more prone to scratches, multiple vehicle scratch detection circuits can be distributed in the front area of ​​the vehicle, so that the multiple vehicle scratch detection circuits can quickly record the occurrence of scratches, so that the user can accurately obtain the time when the vehicle is scratched when using the vehicle, thereby more conveniently obtaining the specific circumstances of the accident when the vehicle is scratched.

[0071] For example, since users do not pay attention to the rear area of ​​the vehicle when using the vehicle, scratches occurring in the rear area of ​​the vehicle are not easily discovered by users. Therefore, multiple vehicle scratch detection circuits can be distributed in the rear area of ​​the vehicle. When the user uses the vehicle, he can quickly know that a scratch has occurred in the rear area based on the vehicle computer, thereby avoiding the monitoring video being covered due to the scratch not being discovered for a long time, making it impossible to collect evidence.

[0072] In some embodiments, the vehicle further includes an on-board surveillance camera, and the sensing range of the vibration sensing module of one or more vehicle scratch detection circuits covers the blind spots of the on-board surveillance camera.

[0073] Specifically, after the vehicle is turned off, the vehicle scratch detection circuit starts to work. When the vehicle is scratched, the vehicle scratch detection circuit will obtain the vibration of the vehicle and store the vibration time in the control module inside the vehicle scratch detection circuit. When the vehicle is started, the vehicle computer starts, and at the same time reads the time when the vehicle scratches recorded in the control module through communication, so that the user can accurately obtain the time when the vehicle scratches. Since the vehicle is equipped with an on-board monitoring camera, the video in the on-board monitoring camera can be called according to the obtained time when the vehicle scratches, thereby more conveniently obtaining the specific situation of the accident when the vehicle scratches. In addition, since the on-board monitoring camera has a monitoring blind spot, it is necessary to cover the monitoring blind spot of the on-board monitoring camera with the sensing range of one or more vibration sensing modules of the vehicle scratch detection circuit, so that even in the monitoring blind spot, the vehicle computer can obtain the time when the vehicle scratches, and call the monitoring camera video near the parking position according to the time when the vehicle scratches, so that it is more convenient to determine the scratch scene at the time point.

[0074] In addition, the vehicle monitoring camera can be turned on according to the vibration state of the vehicle sensed by the vehicle scratch detection circuit. When the vehicle is scratched, the control module receives the vibration state signal and controls the vehicle monitoring camera to turn on. When the vehicle is not scratched, the vehicle monitoring camera remains off, thereby avoiding the situation where the camera cannot be turned on when the parking time is long or the vehicle battery is low due to excessive power consumption caused by the long-term activation of the camera.

[0075] Figure 7 A flow chart of a vehicle scratch detection method provided in an embodiment of the present disclosure is applied to the vehicle as described above, such as Figure 7 As shown, the vehicle scratch detection method includes:

[0076] S301, monitoring the triggering event of vehicle scratch time retrieval.

[0077] S302: In response to a triggering event, obtain the time when a vehicle is scratched, which is recorded by a control module.

[0078] For example, taking the vehicle computer startup as a trigger event for retrieving the vehicle scratch time, when the vehicle is turned on, the vehicle computer starts, and the vehicle computer immediately reads the time when the vehicle scratches recorded in the control module, and extracts the time when the vehicle scratches in the control module into the vehicle computer, and the data stored in the control module is cleared, and the time when the vehicle scratches is stored again after the next vehicle is turned off. In this way, the vehicle scratch detection circuit can record the vehicle scratch time for a long time and multiple times, and will not be unable to record the vehicle scratch time due to insufficient memory in the control module.

[0079] It should be noted that the above embodiment only takes the startup of the vehicle computer as an example of a trigger event for retrieving the vehicle scratch time. The trigger event for retrieving the vehicle scratch time may also be reaching the time set for extracting data, or receiving a command to view vehicle scratches, etc., which is not specifically limited here.

[0080] Figure 8 A flow chart of another vehicle scratch detection method provided in an embodiment of the present disclosure is as follows: Figure 8 As shown, the vehicle scratch detection method also includes:

[0081] S303: Obtain a circuit identifier corresponding to the control module that records the time when the vehicle was scratched.

[0082] S304: Based on the circuit identifier, find the corresponding relationship between the circuit identifier and the layout position of the vehicle scratch detection circuit to determine the location of the vehicle scratch.

[0083] Specifically, since the minor scratches on the vehicle are not easily noticed by the user, but there is still vibration at the scratch location, a corresponding circuit identifier can be set on the control module for the vehicle computer to quickly identify the setting location of the control module and then obtain the location where the scratch occurred. After the vehicle computer obtains the time when the vehicle scratch occurred recorded by the control module, if the vehicle scratch detection circuit detects that the vehicle has been scratched, the vehicle computer reminds the user that the vehicle has been scratched, and starts to obtain the circuit identifier corresponding to the control module that records the time when the vehicle scratch occurred, and searches for the corresponding relationship between the circuit identifier and the layout location of the vehicle scratch detection circuit according to the corresponding circuit identifier, and then determines the specific location of the control module, thereby realizing accurate and rapid discovery of the specific location of the scratch.

[0084] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the 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 sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0085] The above are only specific embodiments of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle scratch detection circuit, characterized in that: Including a vibration sensing module and a control module; The output end of the vibration sensing module is electrically connected to the input end of the control module, and the vibration sensing module is used to sense the vibration state of the vehicle within its own sensing range and output a vibration state signal; The control module is used to receive the vibration state signal, and when determining that a scratch occurs on the vehicle based on the vibration state signal, record the time when the scratch occurs on the vehicle.

2. The vehicle scratch detection circuit according to claim 1, characterized in that: The vibration state signal includes a first level signal or a second level signal, and one of the first level signal and the second level signal is a high level signal, and the other is a low level signal; The vibration sensing module outputs the first level signal when sensing vibration; The vibration sensing module outputs the second level signal when no vibration is sensed.

3. The vehicle scratch detection circuit according to claim 2, characterized in that: The vibration sensing module includes a power supply, a vibration switch, a first voltage dividing unit, a second voltage dividing unit and a comparator; The first end of the first voltage dividing unit and the first end of the second voltage dividing unit are both electrically connected to the power supply; The first end of the vibration switch and the voltage dividing end of the first voltage dividing unit are both electrically connected to the first input end of the comparator; The voltage dividing end of the second voltage dividing unit is electrically connected to the second input end of the comparator; the second end of the first voltage dividing unit and the second end of the vibration switch are electrically connected to the second end of the second voltage dividing unit respectively; and the output end of the comparator outputs the vibration state signal.

4. The vehicle scratch detection circuit according to claim 3, characterized in that: The first voltage dividing unit includes a first resistor and a first capacitor connected in series; The first end of the first resistor is electrically connected to the power supply, the second end of the first resistor and the first end of the first capacitor are both electrically connected to the first input end of the comparator, and the vibration switch is connected in parallel with the first capacitor.

5. The vehicle scratch detection circuit according to claim 3, characterized in that: The vehicle scratch detection circuit further includes a power indication unit and / or a switch indication unit; The first end of the power indication unit and the first end of the switch indication unit are both electrically connected to the power supply, the second end of the power indication unit is grounded, and the second end of the switch indication unit is electrically connected to the output end of the comparator; The power indication unit is used to indicate the start-up state of the vehicle scratch detection circuit, and the switch indication unit is used to indicate the working state of the vibration sensing module.

6. A vehicle, characterized in that: It comprises a vehicle computer and at least one vehicle scratch detection circuit as claimed in any one of claims 1 to 5; the vehicle scratch detection circuit is arranged on the vehicle body, and the vehicle computer is communicatively connected with a control module of the vehicle scratch detection circuit; The vehicle computer is used to obtain the time when the vehicle is scratched recorded by the control module.

7. The vehicle according to claim 6, characterized in that The vehicle includes a plurality of the vehicle scratch detection circuits arranged in a distributed manner.

8. The vehicle according to claim 6, characterized in that The vehicle further includes an on-board monitoring camera, and the sensing range of the vibration sensing module of one or more of the vehicle scratch detection circuits covers the monitoring blind spots of the on-board monitoring camera.

9. A vehicle scratch detection method, applied to the vehicle as claimed in any one of claims 6 to 8, characterized in that: include: Monitor the triggering event of vehicle scratch time retrieval; In response to the trigger event, the time when the vehicle is scratched and recorded by the control module is obtained.

10. The vehicle scratch detection method according to claim 9, characterized in that: Also includes: Obtaining a circuit identifier corresponding to a control module that records the time when a vehicle scratch occurs; Based on the circuit identifier, the corresponding relationship between the circuit identifier and the arrangement position of the vehicle scratch detection circuit is found to determine the position of the vehicle scratch.

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